When you attempt to launch Cyber Files Desktop Client for Mac, the tray icon appears and then disappears right away - the software crashes.
Issue in the product.
A fix is planned for C21.12 (ETA December 2021).
As a workaround, delete the keychain entry and then log in again:
- Open Keychain Access from the Mac OS Applications
- Find the entry com.acronis.filescloud and delete it
- Start the Cyber Files agent
- Open Preferences and log in: enter username, then log in through the Login page.