OP here. I posted the best information I knew about tombola at the time, following plenty of research.

Of course, you should always do your own research, especially in crypto or any volatile market. 

So they changed their blockchain. That doesn't mean, however, that the ICO is bad.  It just means they've chosen to take a different track on the tech.

As for any questions about the math and estimates in the white paper, you really should do the math for yourself and I urge you to contact the team directly on their site and social channels. 

All I was doing was sharing what I knew about an ICO that I thought the community would appreciate. And I think if you score it, you'll find that overall, the post and info in it are transparent and honest, and those are elements which far outweigh little technical details.