Are you able to access your data? As you can see, the access to the configuration page is web-based. Would it be possible that a configuration setting might be blocking part of the content?
I would suggest trying to connect from different client systems and make sure that there is no firewall or security setting blocking the content. You can use the following article as a reference of possible settings to check (the issue description on this article does not fit the criteria of the issue we are seeing here but it gives some recommendations on step 3).