I'm glad I could help. Of course, the US and Canada are full of regulations, etc., since they have federal taxes, local taxes, city taxes, and who knows how many others. Since you're starting a big venture, it's best to have someone who can not only keep you informed, but also take responsibility for their advice and decisions. This solution is a bit too expensive for me, so I need to have some idea of what's what, and I'm already hearing rumors that I might also pull the latest Casio scientific calculator out of any pocket I put my hand in. Also, be prepared, because it's almost certain that after reading all the regulations, you'll start questioning the meaning of life, the universe, and everything (and if it's 42, is it before or after taxes 😉).
I hope that everything will be clear soon, and I will be able to buy a licence because as much as i love computers, automation, and all that good stuff I just don't have a time for another project, and could really use resonable, easy tu use NAS.
Do not hesitate to contact me if you have any questions about all this EU tax naughtyness. I'll be glad to help if it's withing my range of knowledge.