mit appinventor cant open

I use appinventor for school.Now we cant open appinventor the school.Any student cant open appinventor to computer.Only me can open appinventor my computer but now 1 cant open appinventor.All compainon %20 wait and disconnect message.Why this happen.Please help.

Is it being discontinued now? please help

No problem here.
Post screenshot(s). And try also https://code2.appinventor.mit.edu/.

See the Schools section of