Help and troubleshooting

Card Market Guard support

Card Market Guard blocks covered buying, bidding, offer, cart, and checkout paths while preserving recognized selling, account, and research workflows.

A selling page was blocked

Do not temporarily unlock just to sell. Send the marketplace name and the blocked page URL to [email protected] so the selling path can be allowlisted in an update.

A purchase control was not blocked

Marketplace interfaces change frequently. Send the marketplace, page URL, and the visible label of the purchase control to support. Do not include passwords, payment information, private messages, or account screenshots containing sensitive information.

Trusted unlock

Open the extension popup, select Trusted unlock, start the configured delay, then return after the delay and enter the passphrase. The unlock expires automatically after the configured duration.

Reset or removal

Settings can be changed through the extension Options page. To remove Card Market Guard completely, open Chrome's Extensions page and choose Remove. Chrome also lets you clear extension data from its site and extension settings.

Contact

Email [email protected]. Include the extension version shown on Chrome's Extensions page and a concise description of what happened.