You were not able to login to our editing page when I raised this issue before, but I can now get you access if you send the IP address from where you would like to access it.
From what I can see in the screenshot you have the classic editor enabled. This can either be done using the classic editor plugin or in divi itself using the option to disable the gutenburg editor.
Secondly from the screenshot it looks like you want to use the Gutenburg editor for your content templates, however you won't be able to do this if you have the classic editor plugin installed or have the gutenburg editor disabled with divi.
The next issue is that I know that divi requires the classic editor to function correctly. Was this working before ?
Actually, enabling Classic Editor didn't fix the problem, but I saw the button above that for Enable The Latest Divi Builder Experience. I disabled that and it worked. One of the Divi updates must have automatically enabled that feature.