Drive File Encryption

I want to manage my own pgp private keys so I just uploaded my public key to mail guard.

I then used the upload file (encrypted) option uploaded it to drive. However, when I download to decrypt it locally the file does not have any info on it (0 bytes)/download fails.

I also encrypted it locally and then uploaded it but the same thing happens when I try to download it.

Any ideas as to why this is happening?