Server Monetization Rules
Charging players to access your server, if the fees and associated perks do not affect gameplay in any way, is allowed. Cosmetic perks are allowed. Limiting access to only paying players is allowed.
Product placement, in-game advertising and sponsorship is allowed.
In Game Items
Selling of in-game items, that don’t affect gameplay, is allowed.
Accepting donations is allowed, but to avoid any doubts: not providing donations must not prevent anyone from accessing the content.