To add or update your credit card information for your software subscriptions, open https://shop.opendoorerp.com:
Log in to your account and select "My Account".
Select "Credit Cards" and either add a new card or edit the existing.
Please note that cards with historical transactions cannot be deleted. If you no longer wish to use certain cards, please ask your account manager for assistance. We can deactivate these cards internally and remove them from your list.