Whatever it's using (the end of the line is chopped off, but if you tap it, you should get the whole thing), go to Settings > Apps > Message+ and turn off the permission it's complaining about. (Unless Settings in Message+ has a toggle to not notify you if it's doing whatever the message is about.)
Whatever it's using (the end of the line is chopped off, but if you tap it, you should get the whole thing), go to Settings > Apps > Message+ and turn off the permission it's complaining about. (Unless Settings in Message+ has a toggle to not notify you if it's doing whatever the message is about.)