This translation proposal could be shorter, but "Leheneratu zure kontua" literally translates to "put your account as before". A more correct translation of "Reset your account" (which means to restart or reboot your account) would be better translated as "Zure kontua berrezarri", which means "to reset or restart your account". For instance, "eguneratu" translates to "update" and means "to put up to date" and literally translates to "put up to today". The form "Leheneratu" is the same expression but instead of "putting up to date" it "puts something in a previous date or state" but I think that this definition does not include reset or "to put on a default or initial state" clearly.

I also added "Kontua berrezarri" which translates to "Reset account", this way we omit the "your" and get a nearly same length translation for this text.