Updated to Beta 3, Same issue. tested with RCS ON and OFF. I've also tried to reset network settings, and reset all settings. The only thing i haven't done yet is a factory reset which I'm honestly trying to avoid. Any ideas folks?

Resolution, I factory reset my phone and oddly enough, it didn't fix the issue. I then downgraded to iOS 17.5.1. That didn't fix it either. I then factory reset a 2nd time, and it still didn't resolve the issue. Since none of that worked, i then realized the issue had nothing to do with the phone or OS Version. I ended up calling Verizon, and after I told them what the issue was, they suggested for them re-sync the network profile for my device. Once they did this, I rebooted the phone (Vol up, down, and then hold power) and the phone started to work soon after. while I didn't get any of the messages that I had missed, it is working now. what I'm suspecting is that when the RCS Profile was loaded, it caused an issue with the network profile on the carrier side, and it caused the issue. I'm not 100% on this, and won't know until I can test it, but it seems the most likely issue. Try giving your carrier a call, and tell them that txt messaging isn't working, and that you have already factory reset. They should proceed to do the same thing, and it should (hopefully) resolve your issue.