Number changed to primary in text messages

I have tried everything to get this to stop showing up in my messages with non iPhones and it starting to drive me crazy.

I tried turning iMessages and FaceTime off and on/ restarting them both. I have soft and hard reset my phone and completely erased it. Hurry up and fix this annoying notification Apple.

What else is there to try and fix this? It didn’t show up until a few days ago and I got my phone 2 weeks ago.