Tp-Link RE715X WiFi Range Extender has no internet connection after tethering to Wireless Router
Hello. Today, I set up my Tp-Link RE715X WiFi Range Extender to my main wireless router, a TP-Link Archer AX3000. I tethered the device using the WPA method, by pressing the WPA button on the main router, then pressing the button on the extender. I did this twice, since the main router is a dual band router. All lights on the extender come on solid, i.e. Power, WiFi, 2.4G, and 5G. After relocating the extender, the lights come on solid as well, indicating connectivity to the router. When I try connecting my phone or other wireless device to the extender, however, they do connect, but with no internet connection. I have rebooted the router, as suggested in the quick setup to no avail. My main router does have a wireless password, and when you initially try to connect to the extender, you have to enter it, and it connects w/no internet.I have MAC address filtering set up w/a white list, so I'm not sure if this is the issue or not. Any help, and or suggestions appreciated.
Thanks.