How to Upgrade (Standard / Pro)
This guide explains how to create and pay a BTC invoice, how the BTC amount is calculated, and how to verify your payment and subscription status.
Before you start
- Have a Bitcoin wallet or exchange account that can send on‑chain BTC with a configurable network fee.
- Make sure you can send the exact BTC amount shown on the invoice plus network fees on top.
- We recommend choosing a fee level that confirms in a few minutes.
Create the invoice
- Open Cabinet → My Subscription (URL:
/account#tab=subscription). - Click Upgrade to Standard or Upgrade to Pro.
- An invoice appears with: plan, USD price, BTC amount, a BTC address, and a QR code.
A Cancel upgrade button is shown while the invoice is pending.
How the BTC amount is calculated
- The BTC amount is fixed at invoice creation time.
- Conversion uses the Binance spot BTC/USDT rate by default; if Binance is unavailable, a fallback source is used (configured by the administrator).
- The locked BTC amount does not change with later market moves.
| Field | Meaning |
|---|---|
| USD | The plan price in USD. |
| Rate | BTC/USDT price (Binance by default; fallback if needed). |
| BTC | USD ÷ Rate — the exact amount to send. |
Pay the invoice
- Scan the QR code with your wallet or copy the BTC address and amount (use the “Copy” button).
- Send the exact BTC amount to the shown address. Network fees are not included — add them on top.
- Submit the transaction.
Tip: If your wallet rounds the amount, edit it to match exactly (to 8 decimals if needed). Underpayment may delay automatic matching.
How payment confirmation works
- The system checks your invoice address via the mempool.space explorer API.
- We require 2 confirmations for an invoice to be marked as paid.
- Checks run via every ~5 minutes. You can simply keep the page open; it refreshes the status.
The invoice may show an expiry time. If it expires before payment is detected, cancel it and create a new one.
Verify your payment and subscription
- Open Cabinet → Payment History (URL:
/account#tab=history). You’ll see the invoice row with status and timestamps. - After 2 confirmations, status becomes paid and a txid appears.
- Open Cabinet → My Subscription. Your account role changes automatically to Standard or Pro, and upgrade buttons are hidden.
Troubleshooting
- Sent but still pending: Wait for confirmations. You can also view the address on mempool.space to see the latest status.
- Under/overpaid: Exact amount is best for auto‑match. If you sent a different amount, contact support with your txid.
- Wrong network (e.g., Lightning): Only on‑chain BTC is supported.
- Expired invoice: Use Cancel upgrade and create a fresh one.
FAQ
Can I change the plan later?
Yes. Cancel a pending invoice and create a new one, or upgrade from Standard to Pro later.
Can I pay from an exchange account?
Yes, if it sends on‑chain BTC and lets you set a sufficient fee.
What if Binance price source is unreachable?
The system automatically switches to a fallback source; your BTC amount is still locked at creation time.