We only have English online customer service staff for now. But you can send us screenshot and diagnose file to help us identify the issues, we will add some other languages in the nearly future.
Sorry for any inconvenience that may cause.
Reinstallation Guide for GameLoop
Error Codes 20, 21, 30, and 31 when installing GameLoop Client
Keymapping Issues When Playing Mobile Games in GameLoop Client
VCRuntime140.dll Error Code When GameLoop Client Crashes
Best Settings Guide for GameLoop
Click To Install