You can check the “End-to-End Encryption” module in “Settings” >> “Global Settings”(which needs to be upgraded to version 2.16.0 and above).
Click the “View Key” button.
Perform verification.
After successful verification, you can download the encryption key file.
If you are using a new device and cannot view the key according to point 1, you can try to use an old device that has already verified the key to view the key according to the steps in point 1.
If you can't retrieve the key by any of the above methods, you can contact our official customer service for consultation.