Cash Rewards can be used when clients reach the unlock condition: keep the eligible assets in Moomoo account for 90 days after clients get the Cash Rewards. 
In the unlocking period, clients can trade their transferred/deposited assets but if they transfer out or withdraw the funds, unlocking will fail. Due to the unlocking period, kindly check the "my rewards" list when clients receive the coupon rewards. 
• Cash Rewards are valid for 6 months from the date of issuance of the reward.

• All listed stocks and ETFs tradable through Moomoo Financial Inc. can be transferred in or out of your account.
• Transfers are available for: US stocks, American Depositary Receipts (ADRs), and ETFs; Cash and options (from Robinhood, Webull, TD Ameritrade, Fidelity, E Trade, Cash App, Charles Schwab, Ally Invest, Firstrade, Merrill Lynch, and Interactive Broker only).
• Options that expire within 7 days of initiating the transfer cannot be transferred in.
• Transfers are currently not available for: bonds, mutual funds, pink sheet stocks, or other OTC stocks
• Special note on ETFs: Only listed ETFs are supported. ETFs listed in the US markets must have a market value of over $300 million and a market price of at least $5 at the time the transfer is initiated. 
• For more details visit https://www.moomoo.com/us/support/categories/133