I haven't read the terms and conditions or details about this promo. But, According to its title, You should hit 100x on slot games. So, If you were unable to hit 100x, I don't see any problem from the casino side. The title says up to 3mBTC, So, You should read the details for more information.
The
terms and conditions of the tournament says this
How are points calculated?
1. For every 1x multiplier received on any Livecasino.io slot games, a player will receive 1 point.
I had some confusions about this point calculation system. So, I asked their live support to clear my doubts. Their live support reached their promotions team and sent me the details in my email. Firstly they provided wrong information to me, they send me the appropriate details later. Actually this 100× multiplier challenge is a highest win multiplier tournament where every user with a 100× multiplier will receive a 0.5 mBTC prize. Anyway, I got a 287.50× multiplier today. Now I'm at 6th position with that multiplier. This isn't going to be easy to get the top 3 rank.