Any Diablo Instagram Giveaway Winner Here?

Last week, there was a giveaway for people who follow the Diablo instagram page. All we have to do is simply follow the page. 30 lucky followers will win a digital BlizzCon® Celebration Collection Epic Pack.

The giveaway ends Feb 22 and it says within 48hrs it will notify the winners. My question is, how do we know if we have won? They did not ask for name or contact details at all. So is there any winners here? How were you notified that you have won?

Giveaway details here
https://us.forums.blizzard.com/en/d3/t/the-diablo-celebration-collection-giveaway/26868