Why are some of my buttons not working?

Why are some of my buttons not working?

Sometimes when I click the buttons on my remote nothing happens. They work sometimes, but sometimes they do not.

ANSWERS:

"The buttons may be stuck due to debris within the remote or a disconnect in the electrical signaling. Attempt to clean under the buttons by spraying compressed air to dislodge any foreign elements. If this does not work, use this guide to take the remote apart and/ or replace the buttons.

Logitech Harmony Touch Troubleshooting"