If you're running a Fediverse server, make sure you are actually using and monitoring your designated admin account. Do not leave it unmonitored, do not tell people to contact a different account.
Here's why it's important: Your admin account is the one people will contact if there's a problem involving your server. If your admin account fails to respond to multiple reports of problems, your server may end up being defederated by other servers for being unresponsive.