The docs has the following remark about querying orders: "The API can return an "unconfirmed" status for the following reasons: The store can’t get the order status at this time The store doesn't support real-time order status query In this case, retry the QueryOrder API with an interval. The store will send a callback (in near real-time) to UDP and UDP can return the status to the game." 1. Which stores support real-time order status query ? 2. Should we retry if store doesn't support real-time order status query, as mentioned in last line? 3. In which case "status" field of response will contain STORE_NOT_SUPPORT value? What is a difference between UNCONFIRMED in case of "store doesn't support real-time order status query" and STORE_NOT_SUPPORT values of the "status" field? Thank you!