I don't know if it's the right place, but it's the best I found.

On Twitter, the user @nft_chunk is selling Minecraft chunks on a server. This is violating the EULA, which according to it, it is forbidden to sell things and use the Minecraft keyword. But by selling chunks in a Minecraft server, it is implied they're using the keyword, even if they didn't mention it specifically.

I'm reporting this instead of emailing Mojang support because this server is using NFT, that most of the community actively can be seen to hate, and I think the community will want a place to follow the case.