Welcome to the Online Community, Fighousestudios.
I’d be glad to help with getting the credit card payment matched to your invoice.
Before performing the process, let’s first check the Undeposited Funds to see if the funds are posted there. If the payment is not deposited in the Undeposited Funds, you’ll need to manually make a deposit to correct your financial records.
After entering the deposit, go back to the Banking screen and match the payment. You'll find the step by step process in this article: Add and match downloaded banking transactions.
With these steps, I'm confident that your invoice will be already marked as Paid.
You can reach out to me directly if you have concerns about working in QBO. I'll be glad to assist you further. Have a great day ahead.