Your latest log shows a login faikure:
Jun 20 18:34:24 9900K unassigned.devices: Mount SMB share '//NAS1/user-pool.nas1megashare' using SMB default protocol.
Jun 20 18:34:24 9900K unassigned.devices: Mount SMB command: /sbin/mount -t 'cifs' -o rw,noserverino,nounix,iocharset=utf8,file_mode=0777,dir_mode=0777,uid=99,gid=100,credentials='/tmp/unassigned.devices/credentials_user-pool.nas1megashare' '//NAS1/user-pool.nas1megashare' '/mnt/remotes/NAS1_user-pool.nas1megashare'
Jun 20 18:34:24 9900K kernel: CIFS: Attempting to mount \\NAS1\user-pool.nas1megashare
Jun 20 18:34:24 9900K kernel: CIFS: Status code returned 0xc000006d STATUS_LOGON_FAILURE
Jun 20 18:34:24 9900K kernel: CIFS: VFS: \\NAS1 Send error in SessSetup = -13
Jun 20 18:34:24 9900K kernel: CIFS: VFS: cifs_mount failed w/return code = -13
Check your credentials.