Change Certificate

I installed WordPress as test with an url like http://servername. I created a domain-certificate (cer, key) and used Really Simple SSL in order to switch to https. Works just fine, everything is alright.

Now, I would like to change the url to something like https://intranet. So I created a domain-certificate (cer, key) – and now I cannot figure out how to CHANGE the certificate. Really Simple SSL doesn’t seem to show any option to do that (“your progress”, a few settings, like “mixed content fixer”, “tips & tricks”, “our plugins” and “support-forums”).

I changed the url of the website and accepted the certificate-warning of my browser in order to see, if this triggers someting with Really Simple SSL (the plugin might detect a mismatch of url and certificate and offer to fix that) – but I still cannot see a way to tell Really Simple SSL to use the NEW certificate.

Can you help me with that?