Use Email and Password that you provided during registration to the site.
Hyena is also available in language English
http://www.hyena-mx.com/en/password-dimenticata?valuta=Dkk%3Fvaluta%3DFim%3Fvaluta%3DUsd%3F&valuta=Eur%3F&valuta=Eur%3F&valuta=Usd&valuta=Yen%3F