Bad contact. Beitong BETOP is a Chinese smart game controller brand. It has focused on the development of game controllers and end-game mobile game controller auxiliary software for 20 years. If the controller drive is normal but the controller test is abnormal, it is due to poor contact. For specific situations, please ask the after-sales personnel for consultation. Beitong is the leading gaming peripheral brand in China. Its predecessor was Lichang Co., Ltd., and in 1997 it officially registered the "Beitong" and "BETOP" brand trademarks in China.