[Q] Nexus 6 Verizon Network problem topic

I've had a T-mobile Nexus 6 on Verizon network since Thanksgiving. I've had no problems at all UNTIL today. Woke up and my network symbol has an exclamation point next to it and when I try and make calls it sends me to Verizon's customer account services. Also, a dropdown bar with the words "sign into network" appear. After clicking on it it sends me to the Verizon's broadband page.
Anybody else have this problem and no what to do? Wanna run this by before I call and navigate customer service.

Edit: My account is fully paid and up to date