iMessage on iPad 10 running iOS 18.3.2
An iMessage conversation with two other people on my iPad receives text fine but I am unable to reply. I have no problem with the same conversation on my iPhone SE running 15.8.3. The contacts are synced on both devices. There are many other conversations that have no issues on either device. The only clue is this started when one of the other people texted me while I was driving outside my area code.
We have all deleted the conversation and started new but same problem. Opened and closed iMessage many times. Rebooted the iPad by power off and on. No luck.
iPad, iPadOS 18