Not sure where did the problem come from, this sounds not normal, maybe you can try below things:
1. Upgrade both USB and Bluetooth firmware of Xkey Air 37 by using our Xkey Plus free software. You can download it from our website.
2. Do “reset to factory” in the Xkey Plus software.
3. Set the battery saving mode to “never”.
- This reply was modified 2 years, 4 months ago by Zhao Yitian.