@Staybe What is the model number of the router? Try to do a PPPoE connection on your computer with it connected to the modem directly to do a comparison test. Click here to get the instruction. Note:...

@Nahian Can 5GHz be detected by other wireless devices which support 5GHz as well? Click here to login to the web interface and adjust some wireless settings to give it a go. Note: You can adjust the...

@T.M.P. What about the current internet IP address? Are you able to access it remotely with the WAN IP and port number? Please show us a screenshot of the error message when you tried to access it...

@K.raj What kind of password did you enter to login? Theoretically, it is admin by default. You can change another web browser or device to login to give it a shot.

@Johnzxr Hi John, like ajharvey said, does VLAN ID need to be enabled to make the internet work? If so, you can connect the Deco to the existing AC750 to make it access internet first, and then you...

@TimmieG It is our pleasure; if need more help in the future, do not hesitate to contact us.