Bill is paid by using donations through open collective and Patreon:

https://opencollective.com/mastodonworld

https://www.patreon.com/mastodonworld

Which is confirmed in their blog post about Lemmy:

Also I started paying for the Lemmy cloud servers from the mastodon.world funds

https://blog.mastodon.world/

So mastodon.world, calckey.world and lemmy.world are all run by ruud and looking at mastodon.world it states they have 3 admins in total. So 2 besides ruud. And i assume the same group is involved in all of these.

This is just what i managed to figure out before joining lemmy.

Also !lemmyworld@lemmy.world might be a good follow.

Good on you for asking and helping out! When you run into unexpected behavior or issues take time to try and back track what you did that caused this, what buttons you tapped etc to get the behavior and when you report it include these steps.

Edit: Also when you open Memmy and select settings and scroll down you have the option to email debug logs. So definetly do that when you run into any issue and include your feedback in the same email.