1, Go to [You must be registered and logged in to see this link.]
2, Go to Shop and select Boosts

3, Open Cheat Engine

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4,select process (i use Firefox) search for 2000

5, Select all(not select the green) and click on the red Arrow

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6, now Select all and change value to 0

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7, Now Close the Shop and open again the shop and got to Boosts and you see 3+ Bubbles are free you can Buy unlimited now, they may also do so for other things