@Klejne Hi, Please make sure they are both connected to main WiFi network instead of guest WiFi. Also make sure AP isolation is disabled:

@RK-khan Hi, do you mean Tether App cannot detect your TL-WR740N router? Upon checking, your router doesn't support Tether App, you could also double check it here: Tether Compatibility List

@Smithoo4 Hi, when the issue happens, is LAN LED on the router still light up? and it shows network cable is unplugged on the wired client device or shows cable still connected but no internet...

@Themia Do you mean Internet Status shows connected on Tether App but you have no internet access when connected to the router? Please follow this guide for troubleshooting: What should I do if I...

@AF63 Hi, there is no known issue for AX73 V1 at this moment and since there were other users reporting it as well, we are trying to debug on AX73 V1. It is recommended to provide the following...

@LordBeerus Thanks a lot for sharing the information, hope you could enjoy the internet.