Keep increasing the margin
At the beginning, it said that I need to pay a deposit, otherwise there is no way to upgrade the golden membership. When I said that I want to upgrade, it asked me to remit within 24 hours, otherwise it would lock the account. I delayed the remittance for one day and paid a fine of $500. Later I was still unable to withdraw.
It asked for $8,000 deposit, or $10,000 to upgrade to platinum. It was unreasonable.
The following is the original recommendation