Supplied coupon codes often fail at checkout
Coupon codes the add-on supplies often fail, are expired, or do not apply to the item in the cart.
Tier I · Proven The best-established problems.
8 public reports · first reported 20 June 2021 · last reported 2 May 2026
What's going wrong
Firefox users say the coupon codes this shopping add-on offers are frequently expired, do not apply, or only work under conditions the user did not see.
AI-assisted: written with the help of AI from the reports. The idea report has the full summary.
In the idea report
- The full summary.
- The products the 8 reports are about, and how many came each month.
- Related problems.
No business has been found with this problem yet, so the report has no contacts. All sales are final — no refunds. Pricing.