Brother Printers won't connect to Windows 10 22H2 via Gateway

I am assuming that all your devices are connected directly to the T-Mobile gateway via Wifi without going through another router, and you used to have a Wifi router when you initially set up your printers and PC.

Since you have migrated to a new Wifi network, IP addresses of all your devices have changed. Therefore, the Brother printers set up on your PC are no longer valid since your PC only recognizes them by their old IP addresses.  You will need to delete those printers on your PC, and then follow the process described in the printer manual to re-discover those printers in the new Wifi network.