As I said I was trying any and everything. I was trying to install MB2720 and it was in system as MB2700 series.
Looking in wife computer solved the problem:
Device URI: cnijbe2//?port=net&serial=74-38-B7-08-FD-18
Make & Model: Canon MB2700 series Ver5.40
Deleted several Canon MB2720 printers and added the above.