我不是法学的专家
但是
Gift cards cannot be redeemed for cash, cannot be used for cash equivalent transactions (such as bill payments, purchase of financial products or foreign currency, or gambling transactions), reloaded, returned for a refund or have their balances consolidated to a new gift card. We may in our sole discretion elect to cancel a gift card or block such a transaction if you attempt to do so. Gift cards are not legal tender, account cards, credit or debit cards or securities.
付房租我感觉是bill 但是具体是不是bill 我也不知道啊。。。。。。。