if you are watching this in 2024, just go to studios import your avatar with a plugin go to the right of your screen and right click your name/model press export selection then you will have the image
I actually almost fell for kind of phishing. they were private chatting me in-game instead of PM'ing. it was a good thing that I was curious to see how they built their site, until I noticed a regex for ROBLOX cookies in their js code. so I just spammed POST requests to their server with useless cookie junk using python the next day.