You should have received an email from help@centerstagehq.com the first time you listed a card for sale. If you did not receive an email, please make sure you have the right email address on file. Go to your profile > settings > Account to edit your email address. Please also make sure emails from help@centerstagehq.com are not filtered as junk.
If someone buys your card, you will get an email from help@centerstagehq.com with a prepaid shipping label. You will have 3 business days to ship, and you will get paid 3 days after successful delivery. We process payments at 9pm PT every day of the week.
In order to get paid, you have to set up your Stripe Connect account. Go to your profile > settings > Stripe Connect.