Issues with HP 8600 connecting to T Mobile network.

After several trips and calls to TMobile, I was instructed to create a separate network for the printer with a 2.4 Ghz frequency instead of 5G on the laptop or other device.  

That alone didn't work but changing the network setting in the printer settings  to WPA/WPA2 instead of WPA2/WPA3 as mine was did the trick-so far.  Hope  that helps.