Please keep the same name for your 5g network to make changes smooth.
This article for IQ Wireless Charger and IQ Camera
Many routers broadcast Wi-Fi networks in both 2.4 GHz and 5 GHz bands.
Your IQ device directly connects to a 2.4 GHz Wi-Fi network.
This means that you must first connect your mobile device to your 2.4 GHz Wi-Fi network, then connect your IQ device to that same 2.4 GHz Wi-Fi network during the setup process in the Tuya Smart/Smart Life app.