Hi,  This is Jeesu Lee from KAIST. I'm attending DRUID Academy 2023, and I need receipt for my institution now. But the payment system(https://www.events.aau.dk/closed.html https://www.events.aau.dk/closed.html) has been closed.  Is there any way to get receipt before the academy begins? Thank you so much. Best regards, Jeesu Lee