Paying with USDT from Europe: the checkout walk-through
One network, one exact amount, one hash you keep. The part that goes wrong is almost always the copy and paste.
This is the whole procedure, including the two mistakes that create most support tickets. Nothing here is automatic, which is why the order of steps matters more than speed.
Before you open checkout
You need a wallet or an exchange that can withdraw to the network the invoice asks for, holding slightly more than the invoice amount so the fee can be paid on top. If your euro are still in a bank, they have to become a stablecoin first, and that step normally has its own identity check at the exchange. Budget ten minutes for it on a first run.
Choosing a network
Payment is crypto only: USDT and USDC, plus native TRX, SOL and TON, across eight networks shown at checkout. There is no card, no bank transfer and no PayPal. Pick the asset your funds are already sitting in, then pick the network your wallet can actually withdraw to, then read what the cashier displays before doing anything else.
The pair you choose is not a suggestion. The invoice watches one network only, and a payment that arrives on a different chain is a different payment.
The address and the amount
- Copy the address. Never retype it and never edit it. A long string with one wrong character produces a transfer to someone or something else.
- Use the exact amount. The figure on the invoice is the figure that must arrive, to the cent. If your wallet asks who pays the network fee, pay it separately rather than subtracting it from the principal.
- Check both fields after pasting. Network and amount. Those are the two that fail silently.
Keep the transaction hash
Once broadcast, copy the hash. The hash plus the order number is the entire paper trail of this purchase. No email is sent by this shop, there is no SMTP and nothing lands in your inbox, so the hash is what proves you paid if you ever have to ask a question about the order.
If the amount or the chain was wrong
Say so immediately with the order number and the hash. A wrong amount is usually a short message and an extra transfer. A wrong chain is a manual recovery on someone else's network, which takes time and may not be possible at all. Both are handled case by case and both sit outside the standard refund policy: the policy prorates an order that simply was not delivered, it does not promise to fish a payment off the wrong chain.
The network fee is carried by the sender, unless the failure is ours, in which case we cover it.
What good looks like afterwards
An order moves from paid to in progress to delivered, handled by a person, and the subscription appears on the account you gave. If nothing has moved after the delivery window on the listing, message @cdkstorebot in English or Chinese with the order number, or read @cdk_store for stock notes.
Start from the plan list if you have not chosen yet, and read what happens after you order for the state machine on our side. The rules themselves are on the refund page.
Common questions
Do you send a confirmation email?
No. There is no SMTP here and no email is sent at any stage. The order number and the transaction hash are your records.
What if my exchange does not support the network on the invoice?
Choose a different asset or network pair at checkout before paying, or move the funds to a wallet that supports it. Do not send to the wrong chain and hope.
Who pays the network fee?
The sender, unless the failure is ours. Fund the wallet with slightly more than the invoice amount so the fee comes out on top.
Can I pay in two transfers?
Not against one invoice. It watches one exact amount; a split leaves the order unmatched and has to be reconciled by hand.
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