Fail with battlenet app

Hello, i hope you good in pandemia
I can enter my data acces to the app, but then the launcher become a black window and i dont know why. already tried unistall and install, and send a ticket to blizzar but dont get an answer.
Can you help me please, just yesterday buy game time for wow( when i do this app was okey).
PD: sorry for my english

Hey, Heimdall! It looks like a response was sent for this issue here! Our wait times have been much longer than normal recently, so it may take a bit longer for a response than normal.

The main concerns brought up were out of date drivers and windows versions, so updating windows should help. I’d also advised to check out the windows activation problem as well since this can cause some issues with compatibility with our games at times, if you still have issues or run into any new problems!