Thank you for reaching out to us on the forum,
This issue is something we have seen several times before, and often happens to some of the older units.
If you have a revision 3.6 or older, please look at this link:
This guide shows how to adjust the click, and the function itself can also turn the click on and off.
You can find all general commands in the manual here:
If you have any other questions, feel free to reach out again =).