Hello, I am trying to set the two controllers to master/slave (DJI Cendence Remote Controller[master] + DJI Inspire 2 Remote controller [slave] ) mode in Russia, but nothing is working. Can you please tell me if I'm doing something wrong? Or in Russia, this function is not available?

Hello, I am trying to set the two controllers to master/slave (DJI Cendence Remote Controller[master] + DJI Inspire 2 Remote controller [slave] ) mode in Russia, but nothing is working. Can you please tell me if I'm doing something wrong? Or in Russia, this function is not available?