Updating billing info

Hi!

When I started my blog on wordpress.com, I purchased my domain through wordpress. I have since transferred my blog to www.ads-software.com and have also had a new credit card. It’s about that time of the year where I need to pay for my domain again, but my billing info is incorrect, due to my old credit card not being in use anymore.

On wordpress.com there was a Store tab or something like that, where you could see your purchased domains and such, but I can’t find that on my www.ads-software.com dashboard. I’m guessing that this is where I would be able to update my card details so that I’m able to pay for the domain again.

I hope someone can help me.
Thanks.