Nevermind, I just clicked the links in the post I created above and it worked.

Now, how do I delete a post?

Edit: I'm gonna leave this in case anyone has an easy solution or explanation why it doesn't show up in searches?

Sometimes search is just buggy. I had the same problem when I first started: couldn't access certain communities from my instance until one day, I just could, for no particular reason I could see.

The explanation that I saw is that your home instance doesn’t index every community. Those you see when you search have already been accessed by someone else on your instance. But when you search using the specific community link, your instance now knows someone local wants that community and adds it to the index. So when you search again a little while later, it has been indexed and is in the search results.