It opens, I go to open a project, I click it and then nothing happens, not even a change in the url. I just opened it a few hours earlier, and it worked then. I tried resetting my computer, switching to a much better device. It works on my school account, just not my personal account.
NOTE: I did not import or export anything, same account, made from nothing.
This URL allows you to open AI2 to the Project List, without opening any project. http://ai2a.appinventor.mit.edu/?autoload=false
From that list, you can request Exports of Projects without trying to open them.
If you require repair assistance, upload the aia file here.