You need to make an account at Privacy first, then through Privacy, click Your name > Account and scroll down to the Integrations section to set up 1Password. You can set up a virtual card so it’s one-time use or has a limited amount of cash on it, like a gift card.
Privacy cards are virtual credit cards you can generate for free, and are useful for recurring subscriptions that are potentially difficult to cancel, or when you’re ordering from a web store that feels sketchy. integration: 1Password includes optional support for credit cards.