Yes, it was Munich. And all things considered it worked quite well for a while.

After a while AFAIK the then new mayor called himself a “Microsoft fan” and tried to get Microsoft to build their new German HQ in Munich. So I am pretty sure there is no connection whatsoever between canceling Limux and switching back to Windows and Microsoft building a huge campus in Munich Freimann…

Sorry for answering so late. Yes, just mark the invoice as paid or something. Your have to have the invoice in the system though as far as I know.

I use InvoiceNinja for what seems to be a very similar use case. After a doable learning curve I really like it. You can install it on bare metal or use docker.