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=Aud%3F&valuta=Dkk%3Fvaluta%3DFim%3Fvaluta%3DAud%3F&valuta=Eur&valuta=Eur%3F&valuta=Eur%3F