Other PiBox / KubeSail cofounder here. I put in an enormous amout of time into designing around components that can be easily sourced and are stocked regularly. A good example of this is the SL2.1A USB hub we use. The datasheet is in Chinese, but after testing it on several prototypes, we saw great reliability for 1/10th the cost. And its always in stock. Currently Microchip USB hub chips are either out of stock everywhere, or cost $5+, which doesn't make sense for low-cost Pi accessories.

The only issue we still face is sourcing actual Raspberry Pi compute modules. There's very little we have control over there.

There are rk3566 based replacements for the rpi cm4. Radxa CM3 and Pine64 SOQuartz.

I think that Wiretrustee network might be something to support in Kubesail as an app. We could have a look into the integration possibilities.

Give it a shot :)

https://github.com/wiretrustee/wiretrustee

Awesome project, guys! Best of luck with the further development.

P.S. Wiretrustee Author

Thank you! I'm sorry to see this project give up, but I completely understand how painful the supply chain is right now