Really Simple SSL

How to install Really Simple SSL Pro

Table of Contents

Getting started: The installation of Really Simple SSL Pro is just like any other plugin, except that you can’t download it from the WordPress repository, you have to upload it yourself. Like when you do a manual install of a WordPress plugin.

Do not deactivate the free version of Really Simple SSL!

Downloading the plugin

You should have received an email with a download link for the plugin. If not, or if your download link has expired, you can always download it from your account on If you don’t know your password, you can reset it by clicking “Lost password?” and entering the email address used to make your Really Simple SSL Pro purchase.

Because it is an add-on, you need to have the free version of Really Simple SSL activated as well. You can find the free version here, or via the plugins section in your WordPress dashboard.


  1. If you do not have Really Simple SSL free version activated, please install and activate.
  2. In the email you received, you will find a download link. Download the plugin.
  3. In your WordPress Dashboard, navigate to “Plugins”, click “Add new”, and click “Upload”. Select the zipped file you downloaded after purchasing the Pro version, and click Install, then Activate.
  4. Go to Settings/SSL. A new tab “License” has now appeared here. You can enter the license key here, then save.

Please note: You need to upload the zipped file. The Safari browser is known to automatically unzip downloaded .zip files. If this is the case, please right-click -> “Compress” to compress the folder to .zip format again.

After activation

You can find your Really Simple SSL Dashboard under WordPress -> Settings -> SSL. The Premium settings are listed mostly under the “Premium” tab. You can now run the advanced site scan, to find remaining mixed content issues on your site. When mixed content issues are found, you can click the “Fix” button or the instructions link for information on how to fix this. If you run into any problems, please submit a ticket.



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48 Responses

  1. Hi,

    I installed your product Really Simple SSL, into my website( After the installation, my logo disappeared and several contents of my website. I went back and bought your Really Simple SSL Pro hoping it will help resolve these issues, but it could not install the Really Simple SSL Pro-I just don’t know how to upload Zip Files.

    The Padlock appeared but locked out many contents of my website. If the Really Simple SSL Pro can solve this problem, kindly do it for me. I need my logo back and the other logos that disappeared. My product number is

    1. Hi,

      To install the pro version you can just follow the procedure explained in the article above. In the part where you click upload, you can navigate to the file that you have downloaded when you purchased the premium plugin. Select it, then click “open”. It will get uploaded and installed.

      As for the mixed content, I will send you a separate email.

  2. Now you tell me “Do not deactivate the free version of Really Simple SSL!”
    I purchase the premium, have the activation key and now ccan’t even enter my site. Very frustrating

    1. Hi Philip,

      when you de-activate the plugin you should be able to login again after clearing your cookies or using another browser.

      If you are locked out of your site and can’t enter after clearing your cookies or with another browsers, you can follow the steps described in this article to disable Really Simple SSL and regain access to your website: What kind of error do you get when trying to login? It looks like the site redirects back to http://. This redirect to http:// should be disabled before activating Really Simple SSL again. You should be able to enter the license in the ‘Settings->SSL->License’ tab. Let me know if you still experience issues after regaining access to your site.



    2. If the issue was caused by the deactivation of Really Simple SSL, you should be able to reactivate by logging in and activate. Because your site was on https before, you might need to clear your cookies. Even so, it’s possible the css is broken when logging in. Ignore the broken css, and search for the plugins page, then activate Really Simple SSL, then enable SSL again.

      If you run into any issues, let me know, you can also submit a ticket through

    1. Hi Roman,

      You have probably safari with the option to unzip files on download enabled. To disable this, go to:
      Safari > Preferences > General > Open “safe” files after downloading: uncheck.

    1. Hi Vincent,

      If your license is activated in settings/ssl/license, you can update the plugin as any other WordPress plugin. Please note that after saving the license, you should also click the “activate” button.

  3. Yes I have received the Purchase Receipt but not any zip-file. I have also logged in and downloaded but it don’t download as a zip-file.

    1. If you click the download link after you have purchased a plugin, you should download a zipped file which you can upload to WordPress. If this is not the case, you are probably using Safari. This is easy to fix. Go to:

      Safari > Preferences > General > Open “safe” files after downloading: uncheck.

  4. hi, Rogier
    I need help!!
    I follow all the steps but still give me, not secure.
    Detected possible certificate issues
    SSL is not enabled yet
    No SSL detected
    Your site is not yet configured for the HSTS preload list.

    But at the same time says => Great! Your scan last completed without errors.

    what I am doing wrong?


    1. Hi,

      Really Simple SSL requires a valid SSL certificate before it can work correctly. Can you enter your domain in the following test to see if your site has a valid SSL certificate If so, you can load the backend of your site over https://. Otherwise you can contact your hosting provider to install a valid SSL certificate.

  5. I have a valid SSL. How do I put it on my site? This is a WordPress site hosted via Network Solutions. Do I have to create a file on the server and put the SSL .crt in the file? What should I name the folder? Where should I put it????? This is so frustrating.

    1. Hi Linda,

      how to install the SSL certificate differs from hosting provider to hosting provider. For detailed instructions on how to install the SSL certificate you can contact your hosting provider. Once the SSL certificate is installed, Really Simple SSL will help to move your site to SSL.


  6. Hi,

    I get this warning: The mixed content fixer could not be detected due to a cURL error: cURL error 51: SSL: no alternative certificate subject name matches target host name ‘’. cURL errors are often caused by an outdated version of PHP or cURL and don’t affect the front-end of your site.
    How can I fix this?

  7. I don’t see a “go ahead and activate SSL” button. I only see an error that reads “Detected possible certificate issues
    Really Simple SSL failed to detect a valid SSL certificate. If you do have an SSL certificate, try to reload this page over https by clicking this button:”

    Reload over https”

    But when I click that button I’m taking to the nosecure address and nothing more.

    1. Hi,

      the plugin has detected that your site uses an invalid SSL certificate. The plugin is not an SSL certificate itself but a tool to configure your site for SSL. The plugin requires a valid SSL certificate before it can work correctly. We recommend to contact your hosting provider about this, they have access to the server and can install a valid SSL certificate for you. Alternatively, you can use a solution like SSL Zen:

      Once installed, we can help you to configure your site for SSL.

      Let me know if you have any other questions.


    1. Hi Yung,

      your site uses an invalid SSL certificate (see Really Simple SSL Pro is a tool to configure your site for SSL, the plugin is not an SSL certificate itself. You can refer to the following article for instructions on how to install an SSL certificate: Alternatively, you contact your hosting provider to install a certificate for you.

    1. Hi Melanie,

      Please make sure that you have installed both the Free plugin (From the WordPress repository), and the Premium plugin (.zip file from your purchase confirmation). Then navigate to WordPress settings -> SSL. You should see a license tab. On Multisite environments you will only see the license tab on the network level.

      Please feel free to contact us via if you need any further assistance.

      [machine translated]
      Hallo Melanie,

      Bitte stellen Sie sicher, dass Sie sowohl das kostenlose Plugin (aus dem WordPress Repository), als auch das Premium-Plugin (.zip-Datei aus Ihrer Kaufbestätigung) installiert haben. Navigieren Sie dann zu WordPress-Einstellungen -> SSL. Sie sollten eine Registerkarte Lizenz sehen. In Multisite-Umgebungen sehen Sie die Registerkarte Lizenz nur auf der Netzwerkebene.

      Falls Sie weitere Unterstützung benötigen, können Sie uns gerne über kontaktieren.

      Kind regards,

  8. Hi Shahada,

    Really Simple SSL Pro is not an SSL certificate itself but a tool to add security headers, set cookies securely and configure your site for SSL.

    Your hosting provider can install a valid SSL certificate for you. Alternatively, you can use a solution like SSL Zen or WP Encryption:

    If you have any questions about this, you can contact us directly at support (at)

  9. Installing the pro version fixed the problem with my homepage on Firefox. The lock is back! It was always there on Firefox and Chrome. Go figure.

    My question is do I leave both the basic and pro plugins activated?

  10. Hi Ted,
    Glad to hear your problem is resolved. Yes, both free and premium should be activated, as the premium plugin is an add-on for the free version.

    Let me know if you have any questions.

  11. Purchased and installed RS SSL on one of my websites. Under “Your Progress” it shows 100% SSL configuration finished! However, I’m still not getting the HTTPS and I have a red flag warning “Not Secure.”
    This site is hosted on GoDaddy

  12. Hi Rogier – I uploaded the pro zip file ( but keep on getting: “Unable to create directory uploads/2021/02. Is its parent directory writable by the server?” looking at the web files, FileZilla all permissions seem to say 0700 if that helps? (ssl test gives an A+ report). Thanks

  13. I’ve started quite a while ago with the free version, a great plugin. So now I have decided to go for the pro version, supporting you all. Everyone has to eat right? 😉

    Just a simple question I can’t seem to find an answer to…
    Do I need the free version of the plugin installed? Or is the pro version by itself ok to keep and I can remove the free version? I don’t like too many plugins active, so try to keep clean installations.

    1. Hi Dick,

      Thank you for using Really Simple SSL and upgrading to Pro!

      The Pro plugin works as an add-on to the free plugin, so you need to keep both activated.

      Let us know if you have any further questions while configuring the Pro plugin. Good luck!


  14. HI There,
    i recently purchased Really Simple SSL pro, however, even thought i’ve uploaded the plugin on my website, i still dont have a padlock on it.
    do i need to add the licence in go daddy?
    please advise.


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