Dear user, sorry for the inconvenience. You can verify whether it is a network problem or a product hardware problem in the following ways:
1.You need to reset the device to AP mode.
2.You need to prepare two mobile phones, one mobile phone to open the hotspot as a network provider (instead of a router), the other mobile phone can be used to connect the device.
3.If you can connect and operate the device through the above methods, it means that there is a problem with your router settings, or the router compatibility is not good.
4.If you still cannot connect and operate the device through the above methods, it may be a hardware problem.