Toyota Sweepstakes

I got a card from Toyota today with offers of discounts on various
services. There was also a notice that they are having a sweepstakes
.... with directions on entering. This is limited to certain states.
Anyway when I went to the web site I was not able to enter because it
asked me for RSVP (?) I put in the number on my card but got the
message that it was not the right one....and I can't move past the
opening page. Does anyone know anything about this? Were you able to
enter? Thanks.