Tilt function works backwards

Since the last app update, the tilt function control works backwards (if you tilt forward, helicopter goes back, tilt left and it rotates right). Cant find a setting to fix. Emails to company have gone unanswered. No longer supported? If not, pretty sad, as this companys helicopters are still for sale.

Jean-Louis B about iSuper Heli, v2.1.3