what should I do if the device goes offline after changing the home router / network operator?


"After replacing a router or a new network, due to the change of the relevant network configuration, it is necessary to remove the equipment that has been allocated before, and then select to re allocate the network and add it.


Note: SSID and Wi Fi password can be changed to be the same as the original. Generally, the device can automatically connect to the new routeā€œ