> For the complete documentation index, see [llms.txt](https://docs.lyzi.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.lyzi.io/en/faq.md). # FAQ Lyzi lets you accept cryptocurrency payments. You enter an amount in euros, your customer scans a QR code with their phone and pays with their crypto, then your device displays "Payment validated". This help center answers the questions that come up during a transaction: how to accept a payment, which cryptos your customer can use, what to do when a payment doesn't confirm, and when to contact Lyzi. ### Quick access | Your situation | Page to check | | --------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------- | | My customer wants to pay in USDT, Bitcoin or with a crypto that isn't on the list | [Non-accepted crypto](/en/faq/cryptomonnaies-wallets-et-exchanges/mon-client-veut-payer-en-usdt-en-bitcoin-ou-avec-une-crypto-non-acceptee-que-faire.md) | | The payment doesn't confirm on my tablet | [The payment is slow to confirm](/en/faq/problemes-de-paiement/le-paiement-ne-se-confirme-pas-ou-reste-en-attente.md) | | The payment time limit has been exceeded | [Time limit exceeded or transaction expired](/en/faq/problemes-de-paiement/delai-depasse-ou-transaction-expiree-le-paiement-est-il-perdu.md) | | My customer sent too small an amount | [Insufficient amount](/en/faq/problemes-de-paiement/mon-client-a-envoye-un-montant-insuffisant-montant-manquant.md) | | My customer may have used the wrong network or crypto | [Wrong network or wrong crypto](/en/faq/problemes-de-paiement/mon-client-sest-trompe-de-reseau-ou-de-crypto.md) | | The payment is blocked for a security check | [Payment blocked by the security check](/en/faq/problemes-de-paiement/paiement-bloque-ou-en-cours-de-verification-de-securite.md) | | The app asks me to scan a QR code at startup | [App disconnected](/en/faq/application-et-terminaux/lapplication-lyzi-pro-scan-me-demande-de-scanner-un-qr-code-au-demarrage.md) | | My customer is asking for a refund | [Request a refund](/en/faq/remboursements/comment-rembourser-un-client.md) | ### The 3 rules to remember 1. **Only "Payment validated" on your device confirms the payment.** Your customer's phone screen is not enough. 2. **Never recreate a transaction if your customer has already sent their funds.** The payment is not lost, even after the displayed time limit. 3. **Ask your customer to keep their payment page open.** That's where messages are displayed if there's a problem. Find all the right habits in [Best practices at the checkout](/en/faq/support/les-bonnes-pratiques-pour-encaisser-en-crypto.md). ### Contents #### Accepting a crypto payment * [How do I accept a crypto payment with the Lyzi Pro Scan app?](/en/faq/encaisser-un-paiement-crypto/comment-encaisser-un-paiement-crypto.md) * [How do I accept a crypto payment with a Nepting terminal (TPE)?](/en/faq/encaisser-un-paiement-crypto/comment-encaisser-un-paiement-crypto.md) * [How does my customer pay in crypto? The steps of their payment page](/en/faq/encaisser-un-paiement-crypto/comment-mon-client-paie-t-il-en-crypto-les-etapes-de-sa-page-de-paiement.md) * [How do I know if my customer's payment is validated?](/en/faq/encaisser-un-paiement-crypto/comment-savoir-si-le-paiement-de-mon-client-est-valide.md) * [How do I cancel a transaction or a QR code in progress?](/en/faq/encaisser-un-paiement-crypto/comment-annuler-une-transaction-ou-un-qr-code-en-cours.md) #### Cryptocurrencies, wallets and exchanges * [Which cryptocurrencies and networks are accepted?](/en/faq/cryptomonnaies-wallets-et-exchanges/quelles-cryptomonnaies-et-quels-reseaux-sont-acceptes.md) * [My customer wants to pay in USDT, Bitcoin or a non-accepted crypto: what should I do?](/en/faq/cryptomonnaies-wallets-et-exchanges/mon-client-veut-payer-en-usdt-en-bitcoin-ou-avec-une-crypto-non-acceptee-que-faire.md) * [How can my customer exchange (swap) their crypto before paying?](/en/faq/cryptomonnaies-wallets-et-exchanges/comment-mon-client-peut-il-echanger-swap-sa-crypto-avant-de-payer.md) * [Which wallets are compatible (MetaMask, Ledger, Trust Wallet...)?](/en/faq/cryptomonnaies-wallets-et-exchanges/quels-wallets-sont-compatibles-metamask-ledger-trust-wallet....md) * [Can my customer pay from Binance, KuCoin, WhiteBIT or another exchange?](/en/faq/cryptomonnaies-wallets-et-exchanges/mon-client-peut-il-payer-depuis-binance-kucoin-whitebit-ou-un-autre-exchange.md) #### Transactions * [What does my transaction status mean (PENDING, AWAITING, EXPIRED...)?](/en/faq/transactions/que-signifie-le-statut-de-ma-transaction-pending-awaiting-expired....md) * [How do I find a transaction and its short code?](/en/faq/transactions/comment-retrouver-une-transaction-et-son-code-court.md) #### Payment issues * [Why isn't my customer's payment going through? All the causes](/en/faq/problemes-de-paiement/pourquoi-le-paiement-de-mon-client-ne-passe-pas-toutes-les-causes.md) * [My customer can't scan the QR code](/en/faq/problemes-de-paiement/mon-client-narrive-pas-a-scanner-le-qr-code.md) * [The payment isn't confirming or stays pending](/en/faq/problemes-de-paiement/le-paiement-ne-se-confirme-pas-ou-reste-en-attente.md) * [Time limit exceeded or transaction expired: is the payment lost?](/en/faq/problemes-de-paiement/delai-depasse-ou-transaction-expiree-le-paiement-est-il-perdu.md) * [My customer sent an insufficient amount (missing amount)](/en/faq/problemes-de-paiement/mon-client-a-envoye-un-montant-insuffisant-montant-manquant.md) * [My customer used the wrong network or crypto](/en/faq/problemes-de-paiement/mon-client-sest-trompe-de-reseau-ou-de-crypto.md) * ["The connected wallet does not hold enough funds": balance at 0](/en/faq/problemes-de-paiement/le-wallet-connecte-ne-detient-pas-assez-de-fonds.md) * [Payment blocked or under security verification](/en/faq/problemes-de-paiement/paiement-bloque-ou-en-cours-de-verification-de-securite.md) #### Refunds * [How do I refund a customer?](/en/faq/remboursements/comment-rembourser-un-client.md) #### App and terminals * [The Lyzi Pro Scan app asks me to scan a QR code at startup](/en/faq/application-et-terminaux/lapplication-lyzi-pro-scan-me-demande-de-scanner-un-qr-code-au-demarrage.md) * [I can no longer accept payments: cash register, terminal or app blocked](/en/faq/application-et-terminaux/je-ne-peux-plus-encaisser-caisse-terminal-ou-application-bloques.md) * [A cashier can't see all transactions](/en/faq/application-et-terminaux/un-caissier-ne-voit-pas-toutes-les-transactions.md) #### Timeframes * [How long does a crypto payment take? Timeframes and limits](/en/faq/delais/combien-de-temps-prend-un-paiement-crypto-delais-et-limites.md) #### Frequently asked questions * [How should I answer my customers' questions about crypto payment?](/en/faq/questions-frequentes/que-repondre-aux-questions-de-mes-clients-sur-le-paiement-crypto.md) * [Frequently asked questions about accepting crypto](/en/faq/questions-frequentes/questions-frequentes-sur-lencaissement-crypto.md) #### Support * [How do I contact Lyzi support?](/en/faq/support/comment-contacter-le-support-lyzi.md) * [Best practices for accepting crypto](/en/faq/support/les-bonnes-pratiques-pour-encaisser-en-crypto.md) * [Glossary of crypto terms](/en/faq/support/glossaire-des-termes-crypto.md) --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter: ``` GET https://docs.lyzi.io/en/faq.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.