[Zubersoft]

Yes, that would be a problem. MobileSheets needs the pedals to send key commands in order for it to be fully supported. As far as what caused your problem, I added support for inertia while scrolling which makes it feel more natural, but that must have caused problems with that pedal if it's somehow generating inertia with the scroll events.

As far as the pedals you listed, the second or third should probably work okay, although I would lean toward the third over the second. Any pedal that sends key commands like page up/page down should work fine.

Mike