Barhalli,
If you deactivated the plugin but requests are still coming in to check the version of the site, it’s likely you have a server cache like Nginx or Varnish that is serving up the pre-deactivated static assets. Please be sure to flush any cache that may be added on your server. This thread might be of some help: https://wordpress.org/support/topic/big-problem-with-server-and-refresh/.
If you are still experiencing issues with this, please respond to this thread with the URL of the website experiencing the issue.
Barhalli,
Since I haven’t heard back from you on this, I’m going to close out this thread. If you’re still having issues, feel free to respond to this message.