Upon login to web.powerapps.com, clicking "data" in the left pane produces the message "something went wrong". I created a trial environment and database about an hour ago. Screen snapshot is attached.
It's working now. I used the dynamics route instead of the powerapps route.
Is this still not working? If not, please create a support ticket at https://powerapps.microsoft.com/en-us/support/. Once you are on that page, there is a button called Create support ticket on the bottom. Click on that and fill out the form. We will get back to you soon.