When you connect Q630M to your laptop via Bluetooth, you are experiencing tablet buttons not working while you are putting the pen close to the tablet(not touch the tablet, just within sensing height). Rest assured that it will be sorted out by upgrading the firmware of your tablet.
Please kindly refer to the following articles to upgrade the firmware.
How to Update Your Huion Tablet's Firmware(Windows)
How to Update Your Huion Tablet's Firmware(Mac)
Note: Once you upgrade the firmware successfully, please unplug the cable and turn the tablet off, then turn it on via Bluetooth.