Topic
Errors
Why a product error or blocked message appears, and how to diagnose it.
Guides
Articles
Step-by-step write-ups for this topic.
- Could not load payment transactionsAdmin payment-transactions list API failed (500 or thrown error).View article
- Could not load Stripe checkout session for this paymentAdmin refund (or similar) — Stripe session retrieve failed for the payment (502).View article
- Could not load top-up optionsBalance top-up modal — presets/options fetch failed (loadFailed).View article
- Could not reach the server — check your connection and try againPremium/checkout client — fetch failed (premium.serverUnreachable).View article
- Could not start checkoutBalance/reseller top-up API fallback — start checkout threw (short message).View article
- Coupon code is not validcheckout-coupon validation failed — code unknown, expired, or not applicable.View article
- Coupon code is required (max 64 characters)Admin coupon create/update — code empty or longer than 64 chars.View article
- Coupon could not be appliedPremium checkout apply-coupon client/API soft failure (couponApplyFailed).View article
- Coupon not foundAdmin checkout-coupon get/delete — coupon id missing (404).View article
- Coupons are not availablecheckout-coupon — coupon feature disabled or unavailable for this checkout.View article
- Each balance top-up amount must be a valid priceAdmin plan-pricing / top-up presets — amount not a valid price string.View article
- Each traffic package needs a valid price and bandwidth (GB)Admin plan-pricing traffic packages — missing price or GB bandwidth.View article
- Enter a coupon codeCoupon apply submitted empty — premium.enterCoupon / checkout-coupon.View article
- Enter your card detailsCard checkout validation — PAN/fields empty before tokenize (enterCardDetails).View article
- Failed to loadShort member UI load failure — e.g. balance top-up messages.loadFailed.View article
- InsufficientPremium checkout balance label — balanceInsufficient short word.View article
- Insufficient balancePay-with-balance refused — account balance below plan/traffic price (402).View article
- Insufficient balance or amountGeneric insufficient funds/amount validation (generated.insufficient).View article
- Invalid IPN signatureNOWPayments webhook — IPN signature header/body verification failed (400).View article
- Invalid payment providerAdmin payment-logo (or similar) — provider slug not in the allowed set.View article