Today many people are having this issue.
The solution is easy as:
- Click on bitwarden
- Go to Settings
- Click on SYNC
- Click on Sync Vault Now button
Thats it! hope it helps
How to fix error:cannot decrypt Bitwarden
Fersho Pls - Feb 11 '22 - Fersho Pls - Feb 11 '22 - 
