notifications not working for only one contact
I have one contact that I no longe receive alerts/notifications for. The contact does not have "hide alerts" turned on. When I get a message from this person, not only do I not get notified, there is no indicator on the app that I have a new message. Since this is the person I message with the most, I really need to see notifications and get alerts.
Notifications work fine for everyone else. I've compared settings with other contacts and they are exactly the same.
I've tried rebooting my phone several times. The first time I did that, it worked and I started getting notifications for this contact, but then it stopped again. Now it's working intermittently.
What's going on? I have iPhone 7, running 13.3.1. The contact has iPhone SE.
iPhone 7, iOS 13