You can cancel a deposit before 17:00 EST
But if you are using margin, you can not cancel your deposit.
Below are the common reasons and solutions.
Reason: Please update your bank account
You need to verify again your bank account, please go to the banking page, find the bank account list and click UPDATE.
Reason: Futu Inc. only accepts deposit from the same person
We found that you were using a bank account belongs to others, if you claim that it is a false alarm, you can write to firstname.lastname@example.org your bank statement.
Reason: Insufficient balance
You don't have sufficient balance at the time you submit the request at the time Futu Inc initiates the transaction from the bank.