Choose the right route
- Redemption codes and credits: activate the allowance or product package shown in the offer through the Undermax redemption page.
- Friend codes: apply eligible discounts in Undermax Friends. They are shareable referral codes, not prepaid credits or personal download keys.
- Friend Credits: earned through the Friends referral program and spent on eligible rewards. They are separate from purchased plugin credits. A reward activation code is restricted to its selected product and the earning itch.io account.
- itch.io download links: provide personal access to the products delivered for an order. Keep these links private and claim them with your own itch.io account.
Purchasing and delivery
Purchase through offers linked by undermax.online or the official itch.io store. The credit purchase page routes its checkout through Xsolla. Other routes, including Friends, can use a different provider. Check the provider, currency, final total, applicable charges and included products before paying.
Follow the delivery instructions on your receipt. A payment authorization or pending notice is not proof of completed delivery. If a receipt or code is missing, contact the payment provider and [email protected] with the transaction reference. Do not pay again just to resolve a pending order.
Redemption and stock
Sign in with itch.io on the official redemption page, then provide the email and code requested there. New redemptions are associated with that itch.io account and appear in My licenses. An older redemption may require its original email; contact support if access cannot be verified. Review the available choices and your allowance before confirming. A completed selection assigns access links to that redemption; it does not create an unlimited balance.
Standard plugin credits cover the eligible selection shown in the redemption flow. Specific packages can have fixed contents. Card Duel System requires its specific eligible offer or package and is not interchangeable with standard plugin credits. Expansion Packs may require a separately licensed parent product.
Availability can change before a selection is confirmed. If valid paid access cannot be fulfilled, contact support for a resolution under the refund policy. Stock limits do not remove your rights to a remedy for an unfulfilled purchase. Existing code validity is not shortened by this revision; any offer-specific validity conditions must be disclosed in that offer.
Keep personal access private
Do not resell, publicly post or redistribute purchased redemption codes, personal download links or account access without Undermax's permission. Undermax-issued promotions and authorized partner referral codes follow their stated conditions. Sharing an authorized friend code is permitted; it does not authorize sharing the products acquired through it.
If you suspect a code or account is compromised, contact support. Checks or restrictions used to prevent abuse must respect applicable law. Merely entering a code on the wrong page is not stated to automatically erase your purchase or refund rights.
Product licenses and support
Products obtained through codes retain their product licenses and stated requirements. A code grants the listed access, not ownership of the software, a right to redistribute its source or a promise that future paid products are included.
For code or product issues, contact [email protected] or the Support Portal. For a payment refund, follow the provider-specific guidance in our refund policy. These terms do not exclude mandatory consumer rights.