Downvotes just don’t work inside communities hosted on lemmy.one. They might work on your own local midwest.social instance, I’m not sure, but if you downvoted my comment here nobody would be able to tell on lemmy.one, and nobody would be able to tell on other federated instances like lemmy.ml or beehaw.org, because lemmy.one simply would not federate that information to them.

You might want to check out !lemmy_support@lemmy.ml for asking questions, and !lemmy@lemmy.ml for reporting bugs and requesting features :)

Mods available to be added?

Not sure what you’re asking here? About creating communities (subreddit equivalent) and adding mods for them, see my comment here: https://lemmy.one/comment/536

You can collapse comments, it’s just not really intuitive, click this button:

No downvoting on lemmy.one:

Downvotes are disabled on this instance, because it is a very small community. If you see something against the rules, report it. If you see something you don’t like, go find something you do like and upvote that instead :)

I may consider changing this in the future.

If you have more questions about this instance, lemmy.one, generally, you can also ask at !meta.