Thanks guys for your help!
Apparently the website is back 🙂 But anyway that's really sad, that tool was really useful for many of us :/ I hope at some point the devs will come back to it.
mistergreen I stopped using DB a long time ago because of the spotty support. I used Spine instead.
Yes, probably a good long term choice, Spine looks active & maintained. I will certainly have a look to it in the future...