Yes this is allowed, I have provided more information below:
We are not currently sponsoring players or servers, however, we have recently launched a program for 3rd party servers interested in advertising to our player base. Essentially, we allow people hosting on outside services to hook into our proxy and take advantage of our discovery systems or host paid-ad campaigns (such as billboards in the lobby). If that interests you, you can read more about the program in the document linked below and join the Discord server under it. Set-up document: https://docs.google.com/document/d/1nMFYVP2CP0OfDwKTFhqJoqRkQmWtbi28mGeSIp1ykv0/ Discord: https://discord.gg/BqXwa4nv