@zageng According to the screeshot your 5 Ghz band setup is fine. What exactly is your issue ? You may update your firmware to the latest one from here (direct link).

@Gamool Check here.

@RafP It seems that the antenna frequency is not that it should be according to 4G: FDD-LTE/ TDD-LTE/ 3G: DC-HSPA+/HSPA/UMTS specifications. If you need a comprehensive information about external...

@Banjopatty You may reconsider positioning of you router - details.This way you could achieve the best wireless coverage with only one device. You can't have separate connections from the ONT unless...

@IrU3 Can you do the following test: Connect AX3000 WAN port to Archer C60 LAN port and check its status. Most probably there's some kind of incompatibility between the ONT port and the AX3000 WAN...

@Lilimog For some reason your RE is not connecting to the router: Go over the setup procedure again. Do you see any error messages during the procedure ? If this persists, may be something gone wrong...