On 16 April 2021 13:46:15 CEST, treasure@fosdem.org wrote:

Hello Reto Brunner, We have been advised that your FOSDEM delivery was returned to the sender in Belgium.

Please check your address details on the attached delivery note. You will need to let us know if anything needs changing, and also to arrange a re-delivery, by replying to this email.

Thank you, -- Administrator

Hi, Ehm that's unfortunate. Sorry for the inconvenience. The address is correct. Can you please arrange for a retry? Greetings Reto