Zum Testen kannst du den QR-Code aus dem Video nutzen, der funktioniert weiterhin

Even better, it would be to use GNU taler https://www.taler.net/

What I always find missing in all these Excel vs. other spreadsheet software debates is the rationale for using a spreadsheet in the first place. I work a lot with large corporations, and it’s often the case that they can’t move away from Excel because, in the past, they relied on it to solve a process in a way that—at least today—could and should be handled better. Perhaps we should question the process more often and the Excel alternatives less.