S25 Ultra MMS Issues while on WiFi

Previous Carrier: Verizon Wireless                Previous Phone: Samsung Galaxy S21 Ultra

Current Carrier: Xfinity Mobile                      Current Phone: Samsung Galaxy S25 Ultra

I switched service in Feb and prior to switching I had no problem sending and receiving MMS messages while connected to Wifi. Now that I am with Xfinity, I am unable to send and receive MMS while on Wifi. Once I turn off wifi, the message will immediately send or be received. I have verified that mobile data is turned on, reinstalled the messaging app, backed up and restored my phone, cleared the data and cached of my messaging app, and cleared my mobile data, wifi, and bluetooth connections all to no avail. Clearly this is an Xfinity problem that needs to be solved.