Problems with RWS Asppstores

Hello everyone,  

Anyone can help me. since I updated the SDL Trados 2021 I couldn't even open it. Its Failed to add command bar extension. I tried to uninstall and Dowland it again, I tried also updated folder C:\Users\%USERNAME%\AppData\Roaming\SDL\SDL Trados Studio\16\Plugins\Packages. but still nothing changes.

I Hope could someone help me.

Thanks in Advance 

Corazon