UR22 with Cubasis 2 iPad mini 2 not connecting

UR22 with Cubasis 2 iPad mini 2, iOS 12.4.6.6, not connecting. Light on ur22 flashing. Worked on my Mac mini using another daw with no issues. Can’t update to iOS 13 with iPad mini 2, which is what Cubasis 3 LE or full version required. Anyone able to help would be greatly appreciated. Thanks