RCS issue on WiFi

Hi. I have an iPhone 17 and am current on all iOS updates. I switched from T-mobile in February. My RCS works fine when I am on cellular, and when I am on WiFi everywhere BUT my home. I have troubleshooted for hours and been on the phone with xfinity mobile for hours. I got a new router today and the issue is still there. I have downloaded a new eSIM. I have reset network settings. Toggled iMessages and RCS off and on. I have forgot my WiFi, reconnected, and messed around with the private WiFi settings. Nothing is working. 

Please help. I am extremely frustrated that RCS is stuck on “waiting for activation” anytime I’m on my home WiFi.