2

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


2

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.


1

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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