If you receive a moderation warning on your account (for uploading a sound, decal, etc) it will close all of your team create sessions and they will present you with the following error. An account should not be banned from using studio unless it actually receives a ban, as developers receive incorrect warnings all the time. There’s even a dedicated forum category for it.
It’s always a good idea to never use your primary account to upload things that go through moderation. You could have just as easily been mistakenly given more than a warning.
This is a good rule that I’ll start following from now on
I confirm that this bug is occurring me too, for me, it starts as a warning: Unable to fetch data.
And every recent/achieved/new/my games place will not appear in there, if you are lucky, you will be able to open the My Games tab to open a place. If you try to join, this error will appear (How i see this error) But sometimes i can open the place 
When your account is in this state, all requests to Roblox start returning redirects to the warning page, which is how this page is triggered while browsing Roblox in a web browser as well. This would need to be changed on the web side, as Studio is at the mercy of whatever the backend returns when we call endpoints, so I would recommend moving this to #platform-feedback:website-features.
