Calvin , part of this is Festool's fault and part is yours. Sorry.
Festool is partly on the hook for allowing this air of mystery to surround their stuff like it's made of myrrh and fairy dust and that it will last forever. And for customers trying to justify their outlay on the purchase. Fact is, Festool doesn't have some magical manufacturing prowess that translates into overwhelmingly better tools.
Sure, being made in Germany by a well trained work force, using better raw materials, and being engineered to a higher standard than say a Harbor Freight widget - makes them better than tools from a lesser manufacturers. BUT - this makes them incrementally better. Not exponentially better. Fact is their bearings aren't ten times better than Makita's. And their batteries and associated tech aren't better at all then Panasonic. Nor is their plastic or castings or .......
I think your expectations are too high. That's not a lifetime vac.
What could you have got circa 2007 instead? Fein Turbo Mk1. Design and factory have changed - good luck getting parts for it. WAP- got bought out, doubtful a circuit board is available form them. Could have got a Porter Cable 78xx - for which you can still get a circuit board in theory. Coulda got a Bosch Airsweep which was made until fairly recently and still has circuit boards available. Most or all are not as capable as the CT22 and not much cheaper at the time.
Call back your dealer and ask for an OEM radio for that 99' and report back if it's available; and if so the price. Some parts are still available for the CT22, just not what you needed. When it comes to electronics it's easy to understand why. Try and get a 2007 board for a Pioneer or Sony stereo.
Did you think about calling Festool before you shipped out a big and expensive to ship vacuum to at least get a read on the problem ? Would have saved you a lot of aggravation.