Fixed an issue where Mercari and Whatnot posting would fail with "Cannot access contents of the page. Extension manifest must request permission to access the respective host." The broad host permission (https:///) was triggering browser site-access restrictions for some users. Replaced with explicit per-site permissions. Also improved error messages across all marketplaces to show step-by-step fix instructions when Chrome/Firefox blocks extension access.

Fixed an issue where Mercari and Whatnot posting would fail with "Cannot access contents of the page. Extension manifest must request permission to access the respective host." This was caused by a broad host permission (https:///) that allowed Chrome/Firefox to present users with a site-access restriction toggle. Removing the broad wildcard and relying on the explicit per-site host permissions resolves the issue for all users.

Stability and reliability improvements for cross-listing workflows.

• More robust handling when posting, delisting, or syncing with supported marketplaces.
• Minor fixes and cleanup for a smoother experience on selltheflip.com.

Thank you for using Sell The Flip — if anything feels off, reach us at selltheflip@gmail.com.

What’s new

Whatnot: The extension can run on whatnot.com with a dedicated bridge so you can post and fill listing flows from Sell The Flip.
Posting reliability: Updating and re-posting no longer tries to “delist” marketplaces where the listing was never actually posted, so the posting overlay behaves correctly for partially posted items.
Listings page: Search is smoother on large inventories (debounced search so typing stays responsive). Status tabs are reordered to All → Listed → Sold → Draft → Error.
Optional shorter line if you need a one-liner:
Adds Whatnot support, improves listings search performance and posting when re-listing, and fixes the update/post flow for never-posted marketplaces.

• Fixed a compatibility issue that prevented the extension from loading correctly on Firefox.