> 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/questions-frequentes/questions-frequentes-sur-lencaissement-crypto.md).

# Frequently asked questions about accepting crypto

### Accepting payments

**How do I accept a crypto payment?** Enter the amount in euros, generate the QR code, the customer scans it with their phone's camera and pays. Wait for "Payment validated". [See the page](/en/faq/encaisser-un-paiement-crypto/comment-encaisser-un-paiement-crypto.md)

**How do I know the customer has really paid?** Only "Payment validated" on your device counts. The customer's screen isn't enough. [See the page](/en/faq/encaisser-un-paiement-crypto/comment-savoir-si-le-paiement-de-mon-client-est-valide.md)

**My customer wants to pay in USDT, what do I do?** USDT isn't accepted directly. The customer exchanges it for an accepted crypto (USDC or EURC for example) before paying. [See the page](/en/faq/cryptomonnaies-wallets-et-exchanges/comment-mon-client-peut-il-echanger-swap-sa-crypto-avant-de-payer.md)

**My customer wants to pay in Bitcoin?** Bitcoin on the Bitcoin network isn't accepted. Same solution: exchange beforehand. [See the page](/en/faq/cryptomonnaies-wallets-et-exchanges/comment-mon-client-peut-il-echanger-swap-sa-crypto-avant-de-payer.md)

### During the payment

**The payment isn't confirming, what should I do?** Wait 2 minutes, then look at the customer's page. After 10 minutes, contact Lyzi. Never recreate the transaction if the customer has sent their funds.

**The time limit is exceeded, should I make a new QR code?** Only if the customer hasn't sent anything. If they have, don't recreate anything: your device will update automatically when the payment is received. [See the page](/en/faq/problemes-de-paiement/delai-depasse-ou-transaction-expiree-le-paiement-est-il-perdu.md)

**The customer sent too small an amount?** They top it up from their payment page, to the same address. If they closed it, send them the transaction URL again from the back office history. Don't recreate the transaction. [See the page](/en/faq/problemes-de-paiement/mon-client-a-envoye-un-montant-insuffisant-montant-manquant.md)

**The payment is blocked by security?** Don't serve the customer until Lyzi has got back to you. [See the page](/en/faq/problemes-de-paiement/paiement-bloque-ou-en-cours-de-verification-de-securite.md)

### Refund

**How do I refund a customer?** A refund is possible: contact Lyzi at <support@lyzi.fr>. It isn't instant. [See the page](/en/faq/remboursements/comment-rembourser-un-client.md)

**What are the fees?** The fees are displayed to the paying customer on their payment page, at the time of payment.

### App and hardware

**The app asks me to scan a QR code at startup.** It disconnected after 30 days without use. Scan the cash register's QR code again. [See the page](/en/faq/application-et-terminaux/lapplication-lyzi-pro-scan-me-demande-de-scanner-un-qr-code-au-demarrage.md)

**My cashier can't see all transactions.** This is normal, they only see their own cash register. See the page


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