They did an introduction post here to show you how to get your key. I've found that theres some errors in the login part when you use certain browsers, I got it to work with google chrome / Chromium. It might be a way to get in while they fix the problems :)
hope that helps!
Thank you very much!
I downloaded chrome just to use Dtube and I could log in but when I went to add a video it does not upload my "Snap" and so will not let me add my video! I hate to see that this is SO buggy, I was really looking forward to using it.
Ah yeah I had the same problem, when I took the snap it was saving it to my local computer and I had to select it to upload it. I don't know if this will work for you but I ended up uploading the snap first before I started to upload my video. That's what I ended up doing to get my first one up.