I am encountering the same issue with a Mac Mini Monterey 12.0.1, Enpass version 6.7.4 (938). Date and time are automatic. calendar, notes, ect sync with ICloud fine but not Enpass. The circle under Synchronizing just keeps spinning. No way to point sync to icloud but it seems already to be trying icloud without stopping. I tried unclicking Enpass in the icloud section of system preferences but no help.