After flashing to stock I have no data/cell phone reception topic

I used the mobile Odin method of flashing back and I also used triangle away before I did this if it's worth mentioning. So after struggling with getting back to stock all day I finally make it happen I put my SIM card back in and notice I am getting no cell phone reception. WiFi works but without WiFi I can't do anything data wise. I contacted t-mobile support and they found no issues with the SIM card
Anyone have ideas on what I can do to fix this?