On OKX, unrealized PnL for X-Perps is calculated using the mark price, not the last traded price. The mark price is also used in liquidation logic. This means unrealized losses are not just a display value — they directly affect your position risk. If unrealized losses increase and the mark price moves closer to your liquidation price, your margin buffer may shrink. In that case, you may need to add margin (where supported) or reduce your position to lower risk.

This guide explains common causes and practical solutions to help you restore access quickly.Why is my OKX app not working? There are several reasons why the app may stop working or crash.

Learn more about other trading-related topics here.

Before using leverage, you should still consider: Position size Margin mode (portfolio margin, selected vs isolated) Stop-loss or exit plan Available margin buffer Volatility conditions Funding rate impacts on the position over time A smaller, more controlled position is often easier to manage than a larger position with aggressive leverage.Practical reminders before using leverage in X-Perps Before placing a leveraged X-Perps order, review the following: Selected leverage level (up to 10x available

If your mobile phone isn't working properly, or you've lost access to it, or you can't get SMS codes, try the following:My SMS codes aren’t working on OKX Try these fixes first to check if you can get codes working again: Automate your mobile phone time.

To estimate Grid Profits for the order group shown: Assume the same notional for buy and sell For calculation purposes, we align the quantity on both sides of the trade using the executed sell amount, which is 0.00005216 BTC.

In this article, we'll explain how we use zk-STARK to protect user privacy while proving our solvency.Before we continue, it's helpful to understand some basic ZKP terms, like Circuit, Merkle Tree, and Commitments. For beginners, there are many resources available to help you get started. For advanced users, you may refer to the MOOC Course and the academic monograph.How does zk-STARK work? We create a Merkle tree using the hash of each user's account as the leaves.

In this article, we'll introduce how it works and explain the general mathematical concept, but if you're interested in diving deeper, start here or here.How does it work? *Execution trace table and Merkle tree constructed for zk-STARK PoR* 1.

How can I use Trading bonus? You can get trading bonus through various promotions. Find out how to obtain it as below: On the app: select Homepage > menu > Reward Center > Trading bonus On the web: select More > Reward Center > Trading bonus Select Trading bonus once you're on the Reward Center pageDo I have to activate Trading bonus? The funds of Trading bonus vouchers in the Reward Center need to be activated before use.

The funding rate is a mechanism used in X-Perps markets to help keep the contract price closer to the underlying spot price.What's the funding rate for me? Funding isn't the same as a trading fee. It is a periodic payment mechanism between long and short position holders.

Traders use this strategy when they believe prices will rise eventually, buying more when prices drop to average out the cost. It’s commonly used in volatile or sideways markets to take advantage of short-term price swings.How do I set it up?

By using the Custom interval feature, traders can refine their market analysis with greater flexibility, making it easier to adapt to different trading strategies and market conditions. Learn how you can use the custom formula feature here.

By leveraging the custom formula feature, traders can gain a more customized and data-driven approach to market analysis, ultimately enhancing decision-making and trading efficiency. Learn how you can use the custom interval feature here.

For more details on other trading bots, visit here.How can I place TWAP orders using the OKX trading bot?

Liquidation price calculator can be used to determine your profit, stop loss, and liquidation prices with this tutorial. Follow the steps below to make the most of your calculations.How do I calculate the required margin, P&L, and P&L ratio?