Added a linksys ax5300 - not working with tv

@Apageit 

Leave the Uverse TV equipment connected to gateway directly.  
Your own personal router on a separate gateway port.  I use mine in access point mode to replace the WiFi section of the gateway and to provide additional wired Ethernet connectivity.   

Thanks. Was hoping to boost signal to ATT wireless receivers but will just use for everything else. Thanks again for the feedback. 

The wireless receivers only work off the WAP...not the wifi. It's a separate signal.

(If I understand your post right.)

Is there a way to boost the WAP?

Not if you don't use a longer cable to connect the WAP to the gateway. You do that and you can move the WAP closer to the wireless receiver.

@Apageit 

In my own testing, the WAP wireless signal range is fairly limited.  The technology uses 5GHz radio, which is great because there’s less interference with other devices, but otherwise suffers significant degradation traversing barriers.