I don't think there's a way to open up popups using just the URL, because it's not built inside the codebase. The only reason you were able to go to a specific page was that there's a loader function for that page. For instance, loadAssetFromURL() for the asset page in ardor/html/www/js/nrs.assetexchange.js


The order remains active until you cancel it by issuing a Cancel Order transaction. Which means you will pay a transaction fee but you will get the unused portion of your funds returned to you.


In most cases you should use the unconfirmedBalanceNQT. Think about it as spendable balance i.e. your total balance minus coins/asset shares/currency units locked for various reasons such unfulfilled coin exchange orders.

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