Probably a stupid suggestion but why don't/ didn't the club open a booth outside the stadium for tickets to be collected? They could have just reprinted the whole batch bright orange and regardless of who recieved their tickets or not everyone brings ID and either swaps their recieved tickets or collects their new reprinted ones. Anyone trying to get into the stadium with the old ticket will be told to go to the booth with the correct ID to swap their ticket. If they can't produce ID tough. Seems the easiest thing to do and if the booth was open from morning till 3 their shouldn't be a problem.