Please sell unsupported YNAB 4 keys.
With everything that is going on in the world right now there are a lot of people who do not want all their financial information on Amazon servers. I know that developing an offline version of the software is expensive and does not fit your subscription model, so would you guys please allow us to buy YNAB 4 as an unsupported piece of software? Sailing the high seas is bad, but putting your trust in Amazon is worse.
I can say, not in an any official capacity of course, this will never happen, but it's a great idea. I had hopes they'd open source it, but...
You can always use https://www.youneedabudget.com/ynab-classic-help/ to find your existing key though via your e-mail.