The Stellar network is VERY fast: when there’s a match to your order in the order book, it will fill in milliseconds.
If your bid is lower than any current asks, your order will remain unfilled until someone offers the asset you’re trying to purchase at the price you specified. Depending on your asking price, this could take a while. In fact, it might never happen should your limit price not be reached or matched.
If your order is only partially filled, your order will stay on the books until it’s completely filled or cancelled. If you don’t want to budge on price, you can leave it open until it’s filled. If you’re eager to obtain an asset, you may need to change your limit price to match the current market.
All open orders will continue to fill incrementally as more orders are generated that meet your limit price.
To cancel an open order, navigate to the All Orders menu in the Activity tab. There you have the option to cancel an individual order or close all open orders at once.
If you have any issues with placing an order please see This Link.
If you have any questions about your order not being filled please feel free to reach out to firstname.lastname@example.org.