I came across this on the He-Man.org forums (courtesy user “Neil”) and thought it was worth passing along to any of you who may be having (or will have) problems with your credit card authorizations on Mattycollector:

If you are a subscriber, it’s not enough just to change your credit card details. If you do that, it only works for all subsequent transactions. Previous purchases (like your subscriptions) are still tied to your old credit card number. In order to solve that you have to go into your Order History, find the order number for your subscription (probably the one “in progress”) and change the credit card details in there as well. It’ll show you the last four digits of your old card number and you can click on that to make the change.

Now I didn’t realise this until after DR had cancelled my 2011 and 2012 Club Eternia subscriptions. They kept telling me to change my credit card details, and I kept telling them that I had done so…. not realising that I hadn’t changed them in the one place they were looking. Now, it’s utterly their fault for having such a rubbish and non-intuitive system… but I’d rather play their game then have to get them to correct mistakes.

That’s a pretty useful piece of information that I haven’t seen Mattel or Digital River publicize anywhere.