The encryption plugin for private messages is causing more problems than it solves and will be disabled on the 10th of January 2022. This will most likely render all your private messages unreadable. Please backup any messages you wish to keep.
After the 10th of January all new private messages will be unencrypted, this means admins have the option to read them. If an admin account is compromised private messages could be exposed. Please keep this in mind and do not share any private information. If you want to share something private then exchange email-addresses instead and continue the conversation via email.