Whats the number

I really like the number challenges. It is fun exploring the relationships in number patterns. I cant find the option for turning off the adds. I want to purchase the "no ads" but the store only offers the purchase of coins for hints. Can anyone help me figure it out? I dont want to play on Facebook.

Lassie 21 about What's The Missing Number? Ultimate Puzzle Math Quiz Game - Brain Teaser & Intelligence Quotient (IQ) Logic Test for Adults & Kids