Connect to other wireless networks. If there is no problem, it should be a problem with routing settings. On the contrary, it may be the problem of the machine itself. If it is the broadband itself, first directly connect the broadband network cable for testing. If it is a broadband problem, contact broadband customer service to solve it. If it is a machine problem, contact the manufacturer for repair and replacement.

Early education is very important, so we should solve this problem as soon as possible.