Fun but lose my coins – Bubble Birds 4: Match 3 Puzzle Shooter Game Review

This game is really fun but I keep losing my coins. I will have over 3000 coins then stop playing, start a game later the same day and it says I only have 700 coins. Where did they go? Need to be able to earn coins and gems that I can keep and build up if not used right away.
Review by Fragile breath on Bubble Birds 4: Match 3 Puzzle Shooter Game.