I am using Really Simple Security for my Wordpress website.

I got a not secure notification for my website saying my pages certificate has expired. When I follow Really Simple Securities instructions on how to add it manually it won’t work.

Am I supposed to put the certificate somewhere else within my website settings?

The website is already https so I know that’s not the issue.

I don’t want to pay for anything because we will eventually merge this website with another one.

I’ve watched some tutorials but they only show downloading the plugin.

All help appreciated!