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Download QBA
Open the downloads page, choose the latest stable QBA version, and save the file to your PC.
Follow these steps to install the desktop app, add the browser helper, and activate your license.
Open the downloads page, choose the latest stable QBA version, and save the file to your PC.
Start QBA, enter your license key, and wait until the license status becomes active.
Download the extension ZIP, unpack it, open your browser extensions page, enable Developer Mode, and choose Load unpacked.
Go to pathofexile.com/trade2, find the item you want to buy, keep QBA running, then start the helper from the extension panel.
The extension should show that QBA is online. If it stays offline, restart QBA and refresh the trade page.