Contacts coming up as odd Email formats on my phone and theirs and asking me to download messages

[AC Question]

I was using Hangouts and Messenger at first and at first everything was normal, but then on my phone it would come up as some odd Email format and even a business type number at one time. It got so bad that I had to go to Verizon stock SMS app which fixed the problem, but I would like to use a third party app, but now it's showing up with Textra and others. Any idea how to fix it? It's happening to people with Android phones and iPhones.

 

[Rukbat]

Only on SMS? Did you ever have this number on an iPhone?