Many thanks for contacting Gudsen Support.
To help you properly, please provide the below information so that we can further follow up on your case.
1. S/N on your gimbal. It's on the device itself, under the quick release system.
2. Could you please advise if you tried with another Android phone such as Huawei/Xiaomi etc? Can it work? And if your phone is with the latest version? If not, please upgrade it to the latest version and try again.
3. If you tried another brand Android phone and able to connect with it, please use it to upgrade the gimbal Bluetooth via this link - https://drive.google.com/open?id=1SVNbaDOmJx0Pvo1u8Jll-XA8Htdp2xBK
After that, try with your phone to connect with the gimbal and see how it works.
4. Purchase receipt in PDF or picture.
Thanks for your cooperation and understanding.