Bluetooth is tricky and sometimes the connection can be laggy or broken or something else can go wrong for some weird reason – it could be the motherboard’s fault or the cheap USB transmitter or software issue or other issues.
Here’s a simple flowchart to follow to reset your Keychron keyboard and fix other Bluetooth troubleshooting issues. Thanks to Tim Wolters in the Keychron Facebook Group for creating this.
IMPORTANT: A factory reset does NOT automatically trigger Bluetooth Discovery Mode; you need to do that manually. Therefore the full reset sequence is [FN+Z+J+4sec > FN+1+4sec].