I am trying to buy some tickets for the London Eye online. I've had three card declines. There are no fraud alerts on the card. The only thing I can figure out has something to do w/ one of the fields on the purchase form: Valid From Date. It is required. I've tried putting in nothing, my expiration date, and a date 3 years before the expiration date. Anyone have experience buying London Eye tickets online and getting through this part of the purchase process?