@Josh_Mitch 

Hi,

A retail version of any "Archer AX1500" product should only ask for a login password, no username.

Are you also asked for a username and password if you try to access the router interface via a web browser? ( http://tplinkwifi.net or http://192.168.0.1 )

If you have indeed an "Archer AX1500" that asks for both, username and password, then this is likely a model that was intended for distribution by an Internet Service Provider, who might opt to configure a default username and/or password of their own. (i.e. not admin/admin)

Can you please look at the label that should be stuck to the bottom or the rear of your Archer AX1500 and tell us the exact "Model:" description printed on it? 

Also check whether there might be a username and password printed on that label other than admin/admin.

  @woozle 

Hello thank you for responding it is an Model: EX220-G2u

AX1500 Dual Band Wi-Fi 6 Router Vr.1 

When I access the web version it just asks me for the password which is the router password and I can access that but when on the tether app it says username and password to manage device which is not the same as TP-Link ID.

I got told to factory reset the device to unbind it and still nothing also got told to use the aginet app and it's not being detected but also have seen videos of people connecting it to there phones. It has wireless password on the bottom aswell as PIN and login password which logs me in on the web. 

  @Josh_Mitch 

The EX220-G2u is neither listed on the Tether Compatibility List https://www.tp-link.com/en/tether/product-list/ nor is there any mention of Tether on its product website https://service-provider.tp-link.com/wifi-router/ex220-g2u/#overview .

Any chance that whoever you saw in a video managing this router model via a phone was doing so via the phone's web browser?