Encryption not working on iPadOS 14.6

[keeper-dev]

I seem to have the same problem: Using
MobileOrg 1.7.5 and
Org Mode 9.4.4
iPadOS 14.6

When I use org-mobile-push, everything is staged and the files are encrypted. When I counter-check using:
openssl enc -md md5 -aes-256-cbc -salt -pass "pass:<myPassword>" -d -in example.org -out ~/example.org.decrypted
I get the correct decrypted file.

When I try to sync the app however I keep getting:

Error: Unable to encrypt file, please check your password

Any advice?

Originally posted by @keeper-dev in #203 (comment)