Why is my motox not deleting texts or conversations?

[AC Question]

I have been trying to delete some of the conversations in my messaging but they will not. I click "delete conversion" then the conversation will just stay there. Then if I exit the app and re-enter all it says is "loading conversations." I cannot answer or see any text when this happens. It will not go away unless I restart my phone. Sometimes it will stay up even if I do restart. I even tried deleting single messages and nothing will happen.