In 3G/4G only mode, ethernet port is acting as a LAN port. If your modem is plugged it, actually, it is working like a wireless access point, You should not be able to share internet with TP router.

Hi edgarina, try a different USB port. Update its driver to be latest or try chipmaker's driver.

When it happens, try to log into web-based utility of WR720 on your phone. Besides, you'd better use some other wireless devices to check if the problem continues or not. Try jimasek's advice and I...

If WAN IP on TL-WDR4300 is 192.168.1.*, you need to open port 8089 for your mserver's IP on tp router. Besides, you need to open port 8089 for tp router's WAN IP on your BT router. Or plug your BT...

Not channel on repeater but your router. After change it, you need to survey your router on repeater again. Besides, try to disable security on your router or change another one like WEP for a test....

I'm confusing... TL-WA701ND works in bridge with AP mode and TL-WA5210G works in access point mode? But it is for...? :confused: You'd better describe your application in details.