Either this carrier has a "fix4bike" mount or is only suitable for "normal" trailer couplings. fix4bike carriers require a fix4bike trailer coupling and cannot be attached to normal ones. The other way round, i.e. normal on fix4bike, is possible. As far as I know, newer Skoda (VW) models all have a fix4bike towbar. You can recognise them by the 2 "knobs" on the left and right of the hitch and otherwise google fix4bike...