# Imported Keys Won’t Save, Encryption / Decryption Error, Signature is Invalid

By:

Support Team

Published:

February 17, 2023

Updated:

September 25, 2025

If you see any of the following issues:

1. Imported PGP keys won't save (of they get deleted on app restart)
2. Encryption / Decryption error
3. Signature verification failure (invalid)

Then it is possible that your keys use an unsupported algorithm.

You check the following article to verify if your key uses a supported algorithm: [https://canarymail.io/help/supported-unsupported-encryption-algorithms/](/content/help/supported-unsupported-encryption-algorithms/index.html).