rc not connecting

New drone, Im new to this too ... tried it on 3 flights of about 10 mins, worked fine, tried to land on a table, it crached to the floor ... Since then; 1. The RC will not connect, tried all the recommendations on uTube, on the RC one light is red, the others geen, I appreciate the green ones...

Hello! I recently purchased a (used) FC40 without battery, so i had to buy a new one. The connectors inside the aircraft needed soldering because some of the insulation on one of the wires to the battery was gone. I tested the aircraft with a battery, it connected successfully to the...