Why was my online shopping or food delivery receipt rejected? We’re sorry, but online shopping or food delivery receipts are not accepted as valid Proof of Address documents. Please submit an alternative valid document. What should I do if my bank, credit card, or e-wallet statement does not display my address? Document formats may vary depending on the issuing institution.

For pure option buyers, you could always choose isolated even if you are in PM so that you don't need to worry about any margin requirement for long option positions. If you intend to use cross margin like margin offsetting in PM or stablecoins as margin, please choose cross.