It is running a hobbyist MPU that is not designed for this type of commercial application for a start.
Is the hobbyist board a Raspberry Pi?
If so, suggest that owners by a spare board as soon as you can that matches the configuration used for MMRM. Agree that you don't buy off the shelf major components that you can't really on future supply chain. Stern did this right - own the design to your board, so that you can reproduce it for 10+ years, rather than 'redesigning' your development environment every time the supplier changes their configuration. Control your own destiny as much as you can.
It is one of the numerous "Raspberry Pi" - "Custard Tart" - whatever stupid name they want to call the latest iteration might be, these things change weekly. Madness to use this in this very expensive, "high end" application. There just is NO excuse for it other than straight out money grabbing IMO.
If this machine used the Stern Spike system it would be a whole different thing - as it is it is a pile of crap waiting for new owners to complain after a year or so. With a SPIKE boardset it could have become every bit as collectable and valuable as the original - massive FAIL!!!
