I had the same problem with mircrosynth.
Square wave gradually increasing the volume so that I can’t even use the pedal, not to mention that sometimes I turn it on and it cuts off all my sound.
I sent an email to EHX and they didn’t give a damn about my problem.
I’m from Brazil, it was extremely difficult to get the pedal and now I can’t use it and the repair is almost as expensive as the pedal.
I am disappointed with EHX.