You will get an official response from Eventide staff, but I think they may want you to clarify whether you’re experiencing this only with the Eventide Device Manager, but not H9 Control.  It would be helpful to specify what O/S your are using, too.

It sounds like you purchased a used device, so the firmware probably hasn’t been updated to the latest.  I can tell you that I solved some puzzling PitchFactor issues myself in the past with the Eventide Direct Updater.

https://www.eventideaudio.com/downloads/?product=PitchFactor