Unable to connect on Teams (blank interface)

Hello, 

I deleted Teams and re-uploaded it on my Mac. Ever since, i can't connect to any of my session. When i open Teams, it asks me on what session i want to connect and opens another window for the password (normally) but that one is fully white. And i lose control of the application. I can only force Teams to shut down and that it. 

I tried deleting the information  of Microsoft on my computer and re-upload the all thing but that doesn't work.

I tried connecting on a new session but doesn't work either.

I can still connect on the web but not on the app

What can i do ?