Please follow these troubleshooting step first:
Please try rebooting the control box and hold simultaneously the Timer Button + Speed Button for about 2 seconds to reset the WiFi connection. If your router signal is weak, you can also use a 2.4GHz hotspot from another phone to pair again.
If the issue continues, please provide:
1. A brief description of the troubleshooting steps you have already tried.
2. Photos or videos showing the issue.