To link your minecraft and your discord account, you first need to get your linking code. To get this code, you have three options. Which one you can use depends on the server's configuration.

1. Global Linking
   To use global linking, join mc.erdbeerbaerlp.de and run /discord link. Then follow the instructions in chat. Afterwards, you can leave the server.
2. Linking in whitelist mode
   To link in whitelist mode (to whitelist yourself), try to join the server once to get your link-code. Then use the /link command with the discord bot.
3. Standard linking
   If the server is not set to whitelist mode, you can get a link-code using the ingame command /discord link. Then use the /link command with the discord bot.

By linking your discord account, you get access to the /settings discord-command, allowing you to change a few settings just for you. Additionally, the server administrator can set up a role that you get when linking.