Read receipts not working
So I had my read receipts on with a specific person and they were working just fine then out of nowhere they stopped getting the notification that I read their messages even though it was still turned on. I have reset my phone, restarted it, toggled it on and off but nothing seems to be working. It works for everyone else except that person, how do I fix it?
iPhone 8 Plus, iOS 12.0.1