You can lose the whole stake
On every order you either win the published payout or lose the amount you staked. There is no partial loss and no way to close early.
You do not own gold
Nothing here gives you title to any metal. You are taking a view on a published number, not buying an asset you can hold or take delivery of.
Time is part of the product
Being right five minutes later is the same as being wrong. Price can move in your favour after settlement, and that does not change your result.
Settlement risk
Results depend on a third-party price feed. If it fails or publishes an obviously wrong price, orders are voided and stakes returned rather than settled on a bad number.
Do not trade money you need
This product is unsuitable for money you need for rent, food, debt or emergencies. It is also unsuitable if losing the stake would change your life.