https://forum.plutonium.pw/user/oneplayer/consent
This should answer the question for you.
We also collect information about your hardware (known as a Hardware ID / HWID) when you run Plutonium to enforce game bans. This information is tied to your unique user ID to pseduo-anonymize the data. Therefore your Personally Identifiable Information (email address in this instance) is not linked directly to the HWID.