Before you start
- Sign in on the website and pick a plan.
- Pick a network. Base, Polygon and Solana have very low fees. Ethereum fees can be high.
- Send only native USDC on the network you picked. Other coins are not credited.
From a wallet app (easiest)
- On the checkout page, click Continue to payment.
- Scan the QR code with your wallet (for example MetaMask, Coinbase Wallet, Trust Wallet or Phantom), or click your wallet in the list to connect it.
- Approve the exact amount. The small extra cents identify your payment.
- Nubi checks the network and activates your plan once the payment is final.
From an exchange
- Open the invoice, but do not connect a wallet. The invoice is valid for one hour.
- Withdraw USDC on the same network shown on your invoice.
- Make sure the amount that arrives is exactly the invoice amount. Many exchanges subtract their fee from the amount, so add the fee on top.
- After sending, copy the transaction ID (hash) from the exchange and paste it on the checkout page, then click Check payment.
Something went wrong?
Do not send a second payment. Write to nubi.help@gmail.com with your invoice ID and transaction hash. Never share your recovery phrase or private key with anyone, including us.
Updated 2026-10-11
