This page doesn't know your stick's current setup yet, so the file would replace its buttons and profiles with what you see here. Importing first starts you from your stick's real setup, including extra buttons like Turbo.
On 192.168.7.1, go to Data Backup and Restoration and click Backup to File, then import that file here. Importing replaces the edits currently on this page.
Pick the firmware version shown on the home page of 192.168.7.1:
Click any button, then pick what it should do.
Test buttons: press buttons on your stick and they light up here. Each one you've pressed keeps a green ring, so you can check them all. If nothing lights up, click the page first. Still nothing? Close and reopen the browser.
Show wiring draws the board and which pin each button connects to. Hover a wire to trace it.
Button positions assume your stick uses the standard GP2040-CE wiring.