We’re putting the final touches on our new badges platform. Badge issuance remains temporarily paused, but all completions are being recorded and will be fulfilled once the platform is live. Thank you for your patience.
George Karnos
Ansys Employee

Verify that the graphics card driver is the most recent.
You can also try the following:
rename the directory %appdata%\ansys to: %appdata%\ansys.back
then, try to start Workbench:
"C:\Program Files\ANSYS Inc\ANSYS Student\v221\Framework\bin\Win64\runwb2.exe"