datawallet crowd-sale is over if you wants to buy datawallet
then you can buy DXT tokens from the following exchanges BiBox and Idex exchange
also you can buy DXT from forkdelta but i think Idex is best
DXT team is doing very well and keep updating community from its development work
check this:
https://medium.com/datawallet-blog/datawallet-tech-blog-korea-recap-video-gif-sticker-contest-winners-d06e3859bbdf