What you want to ask is what if the background music host can't connect to wifi? Check whether the Wi-Fi network is normal, check whether the host is within the range of Wi-Fi signal, and restart the host and router.

1. Check whether the Wi-Fi network is normal. First of all, you need to confirm whether the Wi-Fi network is normal and whether other devices can be connected normally. If you can't connect, check your router or network settings.

2. Check whether the host is within the range of Wi-Fi signal. Please ensure that the host is close enough to the Wi-Fi signal source to ensure the signal quality.

3. Restart the host and router. Restarting the host and router once can solve the connection problem.