itch.io

It won’t let me do pay with card on itch because the avatar contains nsfw content. I have all my avatars posted on Kofi and they allow users to pay with card there!!! (The link to the kofi can be found on my Twitter linked on my profile)

You don’t go to the link in your browser, you set this as your server in the settings of your Figura mod.

i think you should be fine? ive heard of figuras main server flagging avatars that have folders/parts that refer to NSFW junk but i can't confirm or deny that. the alternative backend i personally use is "figura.nsfw.midygamy.me"

Java

The model wasn't specifically made with VrChat in mind. I'm sure someone could port it to blender, then unity, but I don't have the knowledge of how to do that.