Kobra 2 Pro Z-Offset Issue

Hello all,

I have a strange issue with my Kobra 2 Pro. It was printing flawlessly for 3 weeks but recently started having problems with it's Z offset.

It changes with every print. Printer stands in the same spot but the moment I hit print on new project it loses the Z offset completly.
I can change the offset manually, but having to do it during every print is PITA.