Guides Premium plugins Really Simple SSL pro

How to install Really Simple SSL pro

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.

Do not deactivate the free version of Really Simple SSL!

You can watch this video for a brief explanation of the installation and most important features, or scroll down to the explanation below. If you need any help, just submit a ticket.



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 have an account, you can create one using the email you used for the 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.


  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. Go 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 appeared here. You can enter the license key here, then save

Below the settings tab, you will now find your new options, like HSTS. The scan functionality can be found on the scan tab.

After activation

In settings/SSL/Scan, you can now run a scan on your site. In some cases you might need to disable brute force database search (which limits the search to default WordPress tables and files), and/or the usage of curl, which is a function used to request webpages. When mixed content issues are found, you can click on the instructions link for information how to fix this. If you have any problems, please submit a ticket here.


In Really Simple SSL pro you get some extra settings.

  • HSTS (currently apache only)
    This is a security setting that will make your site more secure. I recommend to enable this setting. It’s best to do this when your site has been on SSL for a week or so. More information on HSTS
  • HSTS preload list (currently apache only, and when HSTS is enabled)
    You can enter your site in the preload list, which preloads your site in Chrome and Firefox. This means the browser already knows your site is on SSL, and does not request an insecure page at all. Use this only if you have carefully read the information about it. It cannot easily be undone!
  • Mixed content fixer on the back-end
    In some cases, plugins, or themes insert http links in the back-end as well. If you don’t have the green lock on the back-end, you can enable the mixed content fixer on the back-end as well.

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  • Wilson Thomas


    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

    • Rogier Lankhorst


      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.

  • James Jefferson

    Is it possible to add the license key into the wp-config.php file?

    • Rogier Lankhorst

      Hi James, that won’t work for the plugin updates. Why would you want that?

  • Philip Johnosn

    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

    • Mark Wolters

      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.



    • Rogier Lankhorst

      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

  • Roman Schönenberger

    I purchased really simple SSL pro and downloaded it, but I can’t find the zip file????

    • Rogier Lankhorst

      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.

  • Roman Schönenberger

    Hi Rogier
    Thank you very much.
    I think I’m going to use google chrome in the future 🙂

    Best Regards


  • Vincent Musolino

    Hi Rogier,

    How do I update the pro version?

    • Rogier Lankhorst

      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.

  • odalys garcia

    i downloaded the ssl pro and i did everything from the direction but under the configuration it says no ssl detected

  • Gema Rodríguez Carrero

    We just bought the premium but we did not get the zip file.

  • Gema Rodríguez Carrero

    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.

    • Rogier Lankhorst

      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.

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