I've tried this and it worked for me, but I don't know if it'll work for you. Anyways, just push the buttons that aren't working repeatedly. This should make them a whole lot easier to push, and they will probably start working again. I'm very sorry if I didn't help you. But I'm glad if I did help you.
x.Tori.x
Please contact me if you encounter further problems or have any questions or are in need of help.