THANK YOU!!! 😊 🙏
I had tried everything, except doing a reset. There is one sticker app that was the culprit, and I hadn't been able to see it on a list of apps on the phone to delete it. it's called lovehearts- one word. It wasn't until I read your post just now about going to settings messages and then iMessage that it actually popped up with a red delete button next to it that I was able to get rid of it. My stickers started working immediately. I hope that was the only reason they weren't working but it happened as soon as I did the update. I did all the 17 updates up until today I have the latest and I can't believe Apple did not see this sooner it would seem like a no-brainer to me. And it should be the first thing that they fix as well; it's already been months down the line but they haven't done squat.
Thank you so much because your method work immediately thank you. I didn't even have to restart the phone.