Hi! I also had an issue with getting data from the html form. I found out that the form works in my older experiments (2022), but not in the new experiments with the same resources and scripts. I don’t know java script, but I noticed the difference in Modules -> PennController.js. When I substituted this file with an older version, everything started working! Although I needed to change the html layout a bit, so that everything is in the center of the screen).
Here is my experiment: https://farm.pcibex.net/r/Ndwmfl/