Can not log on Website and can log on app but cannot Join in University video

[ZHOUQW]

Hello, 

I cannot log on teams on the website, also, I cannot join the video, there are no 'join in' bottom when I log on the app on MacBook. the error is Request Id: f4edd0c7-1f4a-4b6e-8d85-f1461d124500
Correlation Id: 1aec829f-a1bd-4547-9135-78dcbc9ba285
Timestamp: 2020-11-16T09:45:07Z
Message: AADSTS900561: The endpoint only accepts POST requests. Received a GET request.

can you help me, please? 

[#2]

Try opening the URL in a private browser session, if that doesnt work either best open a support case.