I riceived my controller from your repair (CAS-1371915-TOY4R5) without RC cable, which Ihad to buy, and now the controller is constantly "connecting"but it  does not connect with the aircraft, what can I do? thank you.

You'll need to link it. Instructions are in the manual...

Sir, sorry for the trouble it brings. For your first question, did you send your cable back? Please try to relink your RC with drone. Here is the video for your reference.