Support
and disclaimers.
Where to ask for help, what item support covers, how to get a fast answer, and the disclaimers that apply to a crypto wallet and card product.
01How to get support
Use the support tab of the item page on CodeCanyon where you bought the NFC Crypto Kit, signed in with the purchasing account. That lets us check the licence and keep a history of your case. Questions before buying go to the item's comments.
02What support covers
| Included | Not included |
|---|---|
| Questions about how the four apps work and how to use their features | Installation, rebranding, hosting or store publishing done for you |
| Bugs in the item as delivered | Customization and new features (for example NTAG 424 DNA cards or new networks) |
| Updates that fix reported bugs | Problems caused by modified code, your hosting or your signing setup |
| Card or reader hardware, card printing, and outages or limits of RPC providers and other third-party services | |
| Lost funds, lost recovery phrases or lost PINs: the kit is non-custodial and nobody, including us, can recover them | |
| Investment, legal, tax or licensing advice |
03How to get a fast answer
- Search these docs first (press
/). Most problems are in Troubleshooting. - Tell us which app, its version (
pubspec.yaml, or the start-up line of Card Studio), your Flutter version (flutter --version), the phone model and OS version, and the card chip. - Paste the exact error and the steps that lead to it. A screen recording helps for card problems.
- Never send a recovery phrase, a PIN, private keys,
.env, keystores orkey.properties. We will never ask for them.
04Reporting a security issue
Report vulnerabilities privately through the item's support tab, with steps to reproduce. Please do not post them in public comments.
05Disclaimers
Users hold their own keys. If a user loses the recovery phrase and every card, or forgets the PIN of the only backup, the funds cannot be recovered by anyone. Blockchain transactions cannot be reversed.
NTAG215 and NTAG216 cards can be copied by whoever holds them. Card roles and spending limits are rules of the app on one phone. Describe them honestly to your customers. See Security model and limits.
The kit is revenue-ready: it contains the optional swap fee described in Swap fee. What an operator earns depends on users, volume and costs. Nothing in this documentation is a forecast.
Offering a wallet, selling crypto cards or charging swap fees can be regulated where you or your users are. You, the operator, are responsible for following the laws and the third-party terms that apply to you. Nothing in this documentation is legal advice.