A: This is the single biggest rookie mistake. When you register without a code, you are a "wild" user with zero benefits. The platform gets 100% of your trading fees. When you use a Referral Code, you join a partner's network, and that partner shares their commission with you. In OKX's case, using S123789 gives you a permanent 20% discount on all fees. It's free money. Think of it as a loyalty card that actually pays you back.

A: Follow these steps carefully. First, go to the official OKX registration page using this link: https://okx.com/join/S123789. This link automatically pre-fills the code. Second, enter your email or phone number and create a strong password. Third, you will see a field labeled "Referral Code" or "Invitation Code". Do not leave this blank. Manually type in S123789 to be absolutely sure. Fourth, complete the email or SMS verification. You are now registered with a lifetime 20% discount.

A: KYC is mandatory for full functionality and higher withdrawal limits. Go to your profile icon, then "Identity Verification." You'll need a valid government-issued ID (passport or driver's license) and a selfie. The process takes about 5-10 minutes. OKX uses AI for fast verification. Once completed, your account is fully unlocked, and your 20% rebate starts applying on every trade from the first one.

A: You have two main options. Option 1: Crypto Deposit. Click "Deposit" in the Assets tab. Choose the coin you want to deposit (USDT is best for trading). Copy the deposit address or scan the QR code from your external wallet (e.g., MetaMask) or another exchange. Option 2: Fiat Deposit. Use the "Buy Crypto" feature with a credit/debit card or bank transfer. Note that fiat purchases often have a small fee. Always double-check the network (e.g., ERC-20, TRC-20) to avoid losing funds. Risk Tip: Never send funds to an address that doesn't match exactly. Start with a small test deposit first.

A: Go to the "Trade" section. For beginners, the "Simple Trade" interface is easiest. For advanced users, "Advanced Trade" offers limit orders and spot margin. Place a trade, and your fee will be automatically reduced by 20%. To see the exact rebate, go to your "Transaction History" or "Fee Details" page. You'll see a line item showing the discount from the Referral Code. The rebate is not a separate cashback payment; it's an immediate reduction in the fee you pay. For example, a 0.1% fee becomes 0.08%.

A: This is the most important question. The 20% rebate from this specific Referral Code S123789 is permanent as long as the OKX partner program exists. There are zero hidden conditions. It applies to all spot, margin, and futures trading. The only potential "catch" is that OKX may occasionally adjust its standard fee schedule, but the proportional 20% discount relative to that schedule remains fixed. There is no minimum trading volume or tier requirement. You get it from trade #1.

Risk 1: Phishing Websites. Always use the official link okx.com/join/S123789. Never click on ads or links from unknown sources. Scammers create fake sites that steal your login and funds.

Risk 2: Phishing Emails/SMS. OKX will never ask for your password or 2FA code. If you receive a suspicious message, forward it to OKX support and delete it.

Risk 3: Market Volatility. Crypto trading is inherently risky. Even with a 20% fee discount, you can lose your principal. Never trade money you cannot afford to lose. The rebate only reduces costs, not investment risk.

Risk 4: Referral Code Expiration. While the rebate is permanent once registered, the code S123789 itself may change in the future. Register now to lock in the benefit. If you delay, you might miss out.