The download game cannot be opened and there are no game files ,why?

My kid tried uploading a level/world, but it kept saying upload failed. We first believed that it was due to Swedish characters, but it still didn't work after he changed the name.

Hey, I want to add this to my wishlist, but I'm unable to because it doesn't seem to be available (either "at all" or at least in my region). Or am I missing something?

My son says he can not find the carrot in the level editor. Is it just missed or is it a reason for it? Or is it there but has he just not found it?

Is there supposed to be a block in front of that spring? https://i.imgur.com/0wnNWwu.png I've confirmed that you're supposed to come out from the other end of that path, so honestly no idea how to get this last coin after exploring the rest of the stage a bunch of times. Any confirmation or hint by dev or another person who did get it will be appreciated....