I did a test for collecting form field from an existing on my website, it didn't work as I expected, and now I have multiple unused properties, so I would like to delete them. After checking the forum, it seems that I need to ask a Hubspot dev, but how can I contact him/her? I couldn't find a way to do that.
I'd recommend reaching out to our Support org so that they can put the request through the proper channels. you can reach them by clicking the 'Help' widget in your portal, or by calling 1 888-482-7768 x3.