Paying for no ads only removes ad pop ups. it does not disable video ads in reward screens. It feels pretty scammy.
From the developer
“ Rewarded videos help us keep a balanced prize system in the game as these ads offer our players free gifts and rewards in return for watching an ad."
This does not justify the purchase of “remove ad’s” not removing ads from BloomSort nor is your response really truth. You get paid for video ads, plain and simple, you are just getting additional money from players for watching ads, there is no pvp so there is not legitimate balancing from those rewards.
I get it, you are trying to be profitable, this is not the way to do it. Use engaging features to entice players to purchase add ons. If you are resorting to ads for your main rev you are doing something wrong with your meta mechanics. Examples of possible solutions: A board clear challenge, a board fill challenge, match three color to clear, flowers within a flower inception style, timed challenge, etc. These are examples new challenges types that would offer more friction to a player and they might need help through purchases to finish.
I hope you can find another way to get rev without scamming people who like your game.