Navigating the world of cryptocurrency can be both exciting and complex. Whether you're new to digital assets or an experienced trader, having quick access to reliable information is essential. This comprehensive guide compiles the most frequently asked questions from users, covering everything from buying and selling crypto with third parties to securing your account with advanced tools like physical security keys and passkeys.
Designed to meet real search intent, this resource delivers accurate, up-to-date answers while enhancing readability through clear structure and natural keyword integration. Below, we explore key topics that matter most to users in 2025.
How to Buy and Sell Cryptocurrency with a Third Party
One of the most common questions users ask is how to trade crypto through third-party platforms. Third-party transactions typically involve peer-to-peer (P2P) trading, where buyers and sellers connect directly via an exchange’s P2P marketplace.
To get started:
- Log into your OKX account and navigate to the P2P trading section.
- Choose whether you want to buy or sell.
- Select a payment method (e.g., bank transfer, e-wallet).
- Review available offers and select one that matches your preferred price and terms.
- Complete the transaction following the platform’s escrow process.
Always verify the counterparty's reputation score and transaction history before proceeding.
👉 Discover how to safely trade crypto with trusted partners today.
Why Can’t I Join a Campaign?
Many users report being unable to participate in promotional campaigns. Common reasons include:
- Not meeting eligibility criteria (e.g., geographic restrictions, account verification level).
- Missing required actions such as minimum trading volume or deposit thresholds.
- Using a restricted IP address or flagged device.
Ensure your identity is fully verified and check campaign terms carefully. If issues persist, contact support with your user ID and error details.
How to Find Your Deposit Address and Tag/Memo/Comment
Depositing funds incorrectly is one of the top causes of lost assets. To avoid mistakes:
- Go to the Deposit section in your wallet.
- Select the cryptocurrency you wish to deposit (e.g., XRP, EOS, XEM).
- Copy the unique deposit address provided.
- Crucially, if a tag, memo, or comment is required, copy it exactly as shown — sending funds without it may result in permanent loss.
For example, Ripple (XRP) transactions require a destination tag; omitting it could delay or prevent credit to your account.
👉 Learn how to make error-free deposits with step-by-step guidance.
Using a Physical Security Key to Protect Your Account
Security remains a top priority for crypto users. A physical security key (like YubiKey) adds strong two-factor authentication (2FA), protecting against phishing and unauthorized logins.
Steps to set up:
- Go to your account’s security settings.
- Enable FIDO2 or WebAuthn authentication.
- Plug in your physical key when prompted and follow on-screen instructions.
- Register backup methods in case the key is lost.
Unlike SMS or app-based 2FA, hardware keys cannot be intercepted remotely, making them one of the safest options available.
Understanding the OKX Referral Program
The OKX referral program allows users to earn commissions by inviting friends to join the platform. When someone signs up using your unique referral link and trades, you earn a percentage of their trading fees.
Key benefits:
- Lifetime commission on referred users’ trading activity.
- Tiered rewards based on performance.
- Real-time tracking dashboard.
To maximize earnings, share your link across trusted networks and encourage active trading.
How to Link an Authenticator App
Using an authenticator app (such as Google Authenticator or Authy) enhances account security beyond SMS verification.
Setup process:
- Download an authenticator app on your mobile device.
- In OKX settings, go to Account Security > Two-Factor Authentication.
- Scan the QR code displayed with your app.
- Enter the generated 6-digit code to confirm linking.
Store recovery codes securely — they’re vital if you lose access to your device.
New User Bonus Program: Terms and Conditions
OKX offers welcome incentives for new users who complete specific onboarding tasks, such as:
- Completing KYC verification.
- Making a first deposit.
- Executing a minimum trade volume.
Rewards often include trading fee discounts, bonus tokens, or entry into prize draws. Always review eligibility rules and expiration dates to ensure qualification.
Creating Passkeys (App-Based)
Passkeys are the next generation of passwordless login technology, offering stronger security through biometrics (fingerprint, face recognition).
To create a passkey on OKX:
- Open the OKX app and go to Security Settings.
- Select Create Passkey.
- Authenticate using your device’s biometric system.
- Confirm creation — your passkey is now active.
Passkeys eliminate phishing risks associated with passwords and are synced securely across devices via platforms like iCloud or Google Password Manager.
Depositing Bitcoin (BTC) via OKX Lightning Network
The Lightning Network enables near-instant, low-cost Bitcoin transactions off-chain.
How to deposit BTC using Lightning:
- Navigate to Wallet > Deposit > BTC.
- Choose Lightning Network as the transfer method.
- Scan the QR code or paste the invoice link from OKX into your Lightning-compatible wallet.
- Confirm the payment.
Note: Lightning deposits are final and cannot be reversed — always double-check amounts and recipient details.
Adding the OKX Widget to Your Home Screen
For faster access, you can add an OKX widget to your smartphone’s home screen.
On iOS:
- Open the OKX app.
- Tap “Add to Home Screen” from the share menu.
- Confirm in Safari settings if prompted.
On Android:
- Open the app or website in Chrome.
- Tap the three-dot menu > “Add to Home screen.”
- Customize name and tap “Add.”
Widgets allow quick balance checks, market glances, and trade execution without opening the full app.
I Haven’t Received the SMS Code
Not receiving SMS verification codes is a frequent issue. Possible causes:
- Poor network coverage or carrier delays.
- Blocked numbers or spam filters.
- Temporary system outages.
Solutions:
- Wait a few minutes; codes may arrive late.
- Request a callback or use an alternative 2FA method (e.g., authenticator app).
- Ensure your phone number is correctly registered and not blacklisted.
If problems continue, reach out to customer support for backend checks.
Verifying Your Individual Account
Account verification (KYC) is mandatory for unlocking full platform features like higher withdrawal limits and fiat trading.
Verification steps:
- Submit a government-issued ID (passport, driver’s license).
- Provide a clear selfie holding the ID.
- Complete any additional document requests based on jurisdiction.
Processing usually takes under 24 hours. Ensure documents are unexpired, fully visible, and match your registered name exactly.
Frequently Asked Questions (FAQs)
Q: Can I change my registered phone number?
A: Yes, but you must verify ownership through existing 2FA methods before updating contact info.
Q: Are passkeys safer than passwords?
A: Absolutely — passkeys use public-key cryptography and biometric validation, making them immune to phishing and replay attacks.
Q: What happens if I send crypto without a memo?
A: Funds may be lost permanently. Always confirm memo requirements before initiating transfers.
Q: How do I know if a campaign is available in my region?
A: Check the official promotions page or contact support with your location details.
Q: Can I use multiple authenticator apps?
A: While only one can be active at a time, you can switch apps during reconfiguration — just ensure seamless transition to avoid lockout.
Q: Is Lightning Network suitable for large BTC deposits?
A: It's best for small to medium transactions due to channel capacity limits; use on-chain transfers for larger amounts.
👉 Secure your crypto journey now with advanced tools and instant support access.