Spot testnet not execute order

Hi everyone
I make a BUY order using API SPOT TESTNET it returns me this JSON:

{“symbol”:“ETHUSDT”,“orderId”:21245,“orderListId”:-1,“clientOrderId”:“lqCQsvrxufiyJutl8jmdg”,“transactTime”:1608837407101,“price”:“0.00000000”,“origQty”:“7.23000000”,“executedQty”:“0.00000000”,“cummulativeQuoteQty”:“0.00000000”,“status”:“EXPIRED”,“timeInForce”:“GTC”,“type”:“MARKET”,“side”:“BUY”,“fills”:}

executedQty: 0 ?
status":"EXPIRED” ?
“fills”: ?

some times the order is successful, other times (most) it returns this JSON to me. With this response JSON the BUY order is rejected.

Any suggestions
thanks bye

Try a different symbol like BNBUSDT; This one doesn’t have enough liquidity