What's new in 1.1.42:
• Facebook Marketplace — clearer errors when a listing is rejected (Commerce Policy, missing fields, rate limits, or a rare API update). You’re no longer told to “update the extension” for every Facebook failure.
• Mercari & Whatnot — more reliable background posting and clearer messages when a marketplace tab fails to load.
• Mercari & Poshmark — restored “Fill form” from the extension toolbar popup on listing pages.
• General reliability fixes for multi-marketplace posting from Sell The Flip.

Improved reliability when posting to Mercari and Whatnot

Detects when a background tab fails to load (popup blocker, VPN, or network issues) and shows clearer guidance instead of technical errors.
Reuses only valid marketplace tabs and skips broken/error pages.
Clearer Whatnot errors when the seller dashboard hasn’t finished loading in the background tab.
General

Small stability fixes for Mercari image uploads and tab handling during cross-listing.
Works with the Sell The Flip web app at https://selltheflip.com — sign in there first, then post or import from your listings.

What’s new in 1.1.39
• Reliability and compatibility fixes for posting and importing on supported marketplaces.
• Clearer handling of listing photos and session-backed flows when using the Sell The Flip dashboard.
Thanks for using Sell The Flip — list everywhere from one inventory hub.

Bug fix: improves image loading during posting when photos are hosted on marketplace/CDN URLs, so drafts complete more reliably.

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.