DKU

If it's a DKU championship you want to sign up to, then you can sign up using krolf.easysignup.com.
At some championships you have to be a member of DKU to participate (e.g. the Danish Championship).
DKU championships are always played in Denmark.

NB: New prices for players comming from other countries to Denmark to play. 20€ per person, including eventuel dinner afterwords (no beverage) (not all championships has dinner included).

Germany

If it's German Open you want to sign up to, then contact Hotel prinz-Luitpold-Bad.

This championship is always played at 2. Saturday in July at Hotel Prinz-Luitpold-Bad in Allgäuer Alpen, Germany.
You can also check out this German site: www.krolf.de