Thanks @Igor! Aside: Visited Croatia a couple of years ago - loved it. Especially Split. Want to visit again. Note to anyone who hasn't been yet - go.
What's the error? I wonder if it's Europe or UK specific. I'll set up a VPN and check it out today.
There are a number of management and feature differences compared to something like Trello - realtime chat channels, time tracking, scheduling etc. But I think the main things are fundamental design/architecture choices.
Zig is very user-centric. It only shows you what is directly relevant - tasks you've been assigned, tasks you depend on, and tasks you've assigned to others. I think it helps keep things more relevant and tidy, especially as teams get larger or if you're dealing with more than one project at a time.
Also Zig is built on a social network - so the typical app, you'd sign up, create a project, invite people to that project via email etc. Zig let's you connect with other people similarly to how you would do it with Facebook or LinkedIn. The difference being all those other people should be in a creative industry - they're 3D artists, or game devs, or engineers, or sound designers etc. etc. It's really meant to help people find good, interesting work, and collaborate in meaningful new ways. As a result there are no fixed teams - you can be part of multiple teams and multiple projects at the same time, and you see it in one view.
Last, we're dedicated to supporting creative work. We're going to be integrating with Adobe apps (they make that pretty straightforward), and are looking at other DCC apps (C4D, Foundry, Autodesk, Blackmagic), as well as 3D/WebGL previews and integration with online services. This isn't done yet, but our plan is get to a place where people don't have to go to the site or another app to collaborate through Zig. You can do it right there in whatever app you're using.
It's a big job, but we're trying to make something that matches the reality of how people in media/games/interactive really work, rather than getting people to adapt to pre-determined processes that aren't a good fit. That's why feedback is so important.