Sorry you ran into those issues and the rude person.

I think new accounts have some restrictions for the first 3(?) days. My understanding is that this was implemented to try to counter an annoying person who keeps making accounts doing shitty things and then deleting that account and making a new one.

I’m pretty sure there’s a way to add multiple images to a post, but I’ve never done it.

For the new content, you may want to try switching your view to “New” or if it’s your first time looking at piefed during the day “Top (x)” [x being how long since you last opened at Piefed]. Those methods usually bring me a bunch of new content.

Hope your experience gets better :)

Edit: It didn’t occur to me earlier, but are you on “Subscribed” feed or “All” feed? If you aren’t on all, I would suggest switching to that until you have enough subscribed communities.