A problem developed this afternoon in which I can't text one contact in my phone. I keep getting the "Message not sent. Tap to try again" error. I am on a Pixel 3 XL and this person is on an iPhone. They do not have me blocked and I don't have them blocked.
I've tried moving them from my contacts and re-adding them. I've added a 1 in front of their number. I've removed the 1 from in front. I've restarted my phone. I've cleared the app's cache. Nothing seems to work!
I am so sorry to hear about any issues with sending a text message. Are you able to receive a text from them? How about calls (incoming and outgoing)? Anything change on your phone when this issue began? AlbertoR_VZW