The share credentials aren't your problem.
May 21 09:30:43 TowerII unassigned.devices: Mount SMB/NFS command: mount -t cifs -o rw,nounix,iocharset=utf8,_netdev,file_mode=0777,dir_mode=0777,sec=ntlm,vers=1.0,username=xxx=******* '//TOWER/BackUp ISO' '/mnt/disks/TOWER_BackUp_ISO'
May 21 09:30:43 TowerII unassigned.devices: Mount of '//TOWER/BackUp ISO' failed. Error message: mount error(111): could not connect to 23.217.138.107mount error(111): could not connect to 23.195.69.106Unable to find suitable address.
The IP address does not look right. Check the TOWER IP address.