No worries! This is something you may see time to time - a customer will email in with a message similar to:
“I just bought a subscription from you guys, and around the same time got a charge of $1 from Cratejoy on my account. Is this you? Was my card compromised? What is the meaning of life?”
We can’t help with the last question, but the $1 (or less, depending on the bank) “charge” is simply an authorization hold. It’s simply a practice within the banking industry to determine and test the validity/funding of a card by adding a nominal "charge" on a payment card account. In Cratejoy’s case, Stripe (one of our supported payment processors) applies and removes removes the hold immediately after the card is approved, but the banks themselves may possibly display it for a few business days. Usually, however, it happens so quickly that customers will never see the transaction.
Not every transaction will incorporate this method of authorization and, just to stress- these aren't actual charges. Instead, they’re tests to confirm that a customer’s card is functional and has the appropriate funding, and will typically appear as "pending."
When billing occurs, and when it's time for customers and subscribers to renew, the credit card transaction statement for customers should have the line item for their subscription post with your, store's name on the statement.