Daan That's true. With a Joint account, it legally belongs to everyone that you invited. Therefore, you can't simply change ownership. That would be strange if there was a bank account with the same account number and it had one set of owners today, but another set of owners tomorrow. No bank would allow for that.
If you want to share account access with varying people, then instead of having a real Joint account, it's easier to use the Connect feature: https://together.bunq.com/d/48584 With Connect, you can always add and remove people at any time. That's because they will get only access, but they'll not legally be owners of the account.
