That Wavlink router is a technical device to solve which one has to be very careful so as to avoid disruption to its working. For the same, one can go ahead with changing the advanced settings of the network from the web or app portal every now and then. These include its frequency bands, bandwidth channels, security encryption, network password, and many others. Make the changes as you please or as required; once done, hit the save button at the end of the window. By doing this, your Wavlink router not working, along with some major issues, will definitely be prevented. Be it with its physical changes, one could change and choose an extra best option for placing the extender. Apart from that, check on the connectivity strength and make sure that the devices are connected to the official network. Actually, wired connections using ethernet wires would be preferred over wireless ones, providing better signal transmission. Finally, it is also a must to keep the router firmware updated at all times.