Tuner Button stop working on my remote pedal

Hi! Yesterday during rehearsal I went to switch to tuner and the switch stopped working. My band mate has the exact same setup and I borrowed his pedal and it works fine. What can I do to get this fixed? It's only 2 years old. I did noticed it was starting to go out a few hours previously our rehearsal.

Thank you!!! I sent them a email and hopefully its some good news....