BiyaPay Announcement on the Contract Size Adjustment of the KORUUSDT USDT-Margined Perpetual Contract

Dear BiyaPay Users,

Due to a stock split of the underlying asset of the KORUUSDT perpetual contract and corresponding adjustments by our upstream trading service provider, BiyaPay will make a corresponding adjustment to the contract size of the KORUUSDT USDT-Margined Perpetual Contract.

The adjustment commenced at 08:15 on July 15, 2026 (Singapore Time, UTC+8) and is expected to be completed by 21:30 on the same day. After the adjustment is completed, the system may enter a recovery preparation phase lasting up to five minutes. Details are as follows:

1. Adjustment Details

Contract: KORUUSDT USDT-Margined Perpetual Contract
Underlying Asset: Direxion Daily South Korea Bull 3X ETF (NYSE Arca: KORU)
Reason for Adjustment: A 20-for-1 stock split of the underlying asset
Adjustment Factor: 20

After the adjustment, the contract price will be adjusted proportionally to approximately 1/20 of its previous value, while the contract quantity will be adjusted to approximately 20 times its previous amount. In principle, the stock split itself will not change the overall value of users’ positions. However, minor differences may occur due to tick size, minimum order quantity, and rounding rules.

2. Adjustment Schedule

• Before 08:15 on July 15, 2026: Normal trading.
• From 08:15 to 21:30 on July 15, 2026: Trading of the KORUUSDT perpetual contract will be suspended during the adjustment.
• From 21:30 to 21:35 on July 15, 2026: The system will enter a recovery preparation phase, during which certain trading functions may remain restricted.
• After 21:35 on July 15, 2026: Normal trading is expected to resume.

The actual completion and resumption times may be brought forward or delayed depending on the progress of the upstream system adjustment. Please refer to the latest status displayed in the BiyaPay App.

3. Impact on Users

1. During the adjustment, users will not be able to open or close positions, place or cancel orders, or modify orders for the KORUUSDT perpetual contract.

2. All open orders for the contract will be canceled by the system, including take-profit, stop-loss, and other reduce-only orders.

3. Funding rate, mark price, price index, liquidation, and related functions will be suspended during the adjustment. The mark price and price index will not be updated during this period.

4. For users who still hold KORUUSDT perpetual contract positions when the adjustment begins, the system will temporarily settle the positions in accordance with the upstream processing rules. The corresponding positions will be reinstated at the adjusted contract size and price after the adjustment is completed. Related unrealized P&L will be settled in accordance with system rules.

5. After the adjustment, the displayed position quantity, entry price, margin, and P&L may change accordingly. Please refer to the updated information on your account page.

6. Candlestick data from before the adjustment will be retained. Certain historical charts may be corrected at a later time.

4. User Guidance

Once trading resumes, please promptly review your KORUUSDT perpetual contract positions, margin, and order status. Existing take-profit, stop-loss, and other open orders may have been canceled. Please place new orders if necessary.

As the mark price and price index will not be updated during the adjustment, the market price when trading resumes may differ from the adjusted mark price. Please assess your positions, manage your exposure appropriately, and take necessary risk management measures based on your own risk tolerance.

5. Risk Warning

Trading stocks, digital assets, futures contracts, and related financial products involves significant market volatility risk. Prices may fluctuate substantially and may result in the partial or total loss of principal. Please ensure that you fully understand the applicable product rules, trading mechanisms, and associated risks, and trade responsibly based on your own risk tolerance.

BiyaPay shall not be liable for losses resulting from market fluctuations, upstream service adjustments, network issues, third-party service failures, user errors, or other related circumstances. The adjustment schedule and final processing results are subject to the latest information displayed in the BiyaPay App and subsequent official announcements.

6. Customer Support

If you encounter any issues during the adjustment or while using the app, please contact us through the following channels:

Customer Service Email: service@biyapay.com
Official Telegram Community: https://t.me/biyapay_ch

Thank you for your continued trust and support of BiyaPay. We will continue to optimize our product features and service experience to provide you with more efficient, convenient, and secure trading services.

BiyaPay Team
July 15, 2026