After upgrading the T4 framework, Tools > Edit Custom CSS no longer works,. Clicking the button does nothing.
You can share the URL + super admin account of your site so I will take a look.
jwill The character in the password looks weird and I can't access backend of your site with it either, could you check again?
I can login now and still see the modal popup for custom css on your site:
I investigated further, the problem seems to be the Firefox browser. It opens for me with Chrome. Any ideas on what I can do or check?
jwill It may due to the slow connection with your server, I still can see the modal in Firefox: