On an additional note, I have also found another issue present on the latest Cryptomater (previously Cryptomater 2) iOS Version 2.4.4. When using an apostrophe character in the name of the parent folder containing the vault on Google Drive. Cryptomater can successfully accept password to add the vault, however displays “failed with error: invalidPassphrase” when using the same password to unlock in the “Files” app. Removing the apostrophe from the parent folder name to just leave letters, numbers, and a space in the name fixed it.