smb config needs updating
The latest boot is showing the following in dmesg:
[ 51.971329] No dialect specified on mount. Default has changed to a more secure dialect, SMB2.1 or later (e.g. SMB3), from CIFS (SMB1). To use the less secure SMB1 dialect to access old servers which do not support SMB3 (or SMB2.1) specify vers=1.0 on mount.
[ 52.913554] CIFS VFS: Unable to select appropriate authentication method!
[ 52.913587] CIFS VFS: Send error in SessSetup = -22
It's a config update that hasn't been propagated to PiBox's smb configuration.