"What's new?" There's a changelog. It's in the menu section of "More" "How come the website is terrible on mobile?" It's because these are designed for computers.
"When is the update?" There's a countdown. If there isn't a countdown, it's because there is no planned release date. "What are the rules?" Check General Discussion's pinned message. You should've read it already.
"Where is the game?" Check Game List. Click the play now buttons under the game you want to play. If it doesn't say play now, it's not done.
"Can you add this enemy/feature/mechanic/anything else?" There's this link, I think it leads to a feedback form. I'm being sarcastic. Click this link. https://caverealm.wixsite.com/cave/feedback-form
This list may be expanded on.
Cool