As others have said, you should probably see if you can cancel your order by contacting them directly. There is a chance that the leadtime to build a Pinion compliant frame might be an issue. Since it is a gearbox and not just a standard BB, I'm guessing that might be custom enough that cancelling the order might be problematic.
If you can't cancel, contact Pinion North America and see what services they offer in your area; also ask about long term product support. It may not be much different that mtb suspension rebuilds. I "think" some mfg require that the fork is sent in to perform service and warranty work. Being informed before service is required is important.
After that, just ride the bike and don't worry about the what ifs.
John