There is a specific and especially annoying failure mode where Temu accepts your code without complaint and your total does not move. The code is fine. The problem is in the cart, and it is almost always one of six things.

The six cart-level causes
Non-qualifying items are the most frequent: the code covers a product pool your cart falls outside. Second, an unmet minimum spend. Third, the discount cap already reached by another applied offer. Fourth, items sold by sellers excluded from the promotion. Fifth, a conflicting voucher already applied, which the code cannot combine with. Sixth, a regional restriction on items shipping to your address.
Each leaves a different fingerprint in the order summary, which is why reading that summary carefully beats retyping the code.
How to isolate it in two minutes
Remove everything from your cart except a single obviously mainstream item, then apply the code. If the discount appears, the problem was item-level and you can add products back one at a time until it disappears — the last item added is your culprit. If nothing applies even on a clean single-item cart, the issue is account-level rather than cart-level.
To run that test you need a code known to be working. These are tested at a real checkout, with the date on each card:
Verified Temu codes right now — Each one is tested at a real checkout before it goes up, and pulled the day it stops applying.
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Up to 30% off select items (new-user offer)
acv906043Checked September 28, 2026 -
$100 coupon bundle for new customers
alc640991Checked September 28, 2026 -
Free gifts for new app users
frm378948Checked September 28, 2026
When it is the account, not the cart
If a clean cart still shows no discount, you are probably outside the offer’s audience — most commonly because the code is limited to first orders and your account has ordered before. No amount of cart editing fixes that, and the better move is checking your in-app coupon section for something targeted at you.
FAQ
Why does Temu accept my code but not discount anything?
Acceptance only confirms the string exists. The discount depends on your cart meeting the offer’s item and spend conditions, which is a separate check.
Does clearing the app cache help?
Occasionally, if the cart state is stale. It is worth one attempt, but it is not the usual cause.