It looks like everything is set up correctly by OP, so I suspect the issue might be the expired certificates bug. See here for an explanation and a fix: https://github.com/chris-belcher/electrum-personal-server/issues/286
If that doesn't work, then at the top of the EPS window it should tell you where it is logging to. Find that file and examine it for errors. Similarly, enable logs in Electrum, and then examine that file for errors too.
Changing the certificates did the trick! Thank you so much!