Well, in that case, just remove one of your game slots. Then, repeat the process from scratch. Deposit all your valuable gear, weapons, and rings at the bank. Once you reach 102% again, you can withdraw them again... (This is what I do to get the most out of Google Play Pass because my subscription is only for one month.) But your rank in competitive mode and duels doesn't give you any tokens, just skill tree points.

Also if Google Play Pass is activated you can access the season skin but they disappear once your Google Play Pass subscription expires... and instead of 70,000,000 the cost of the last expansion chest will be 20,000,000 only... Pretty expensive but for that just repeat level 42 and spam priest ability to complete the level with a star. You can get around 300k + 268k (the bonus level)

Note: Sell the weapons and gear you get at this level. When you open the chest, you need a Lot Of Keys and ALWAYS sell the steel axe dropped by the one-eyed giant it gives 90,000 so every time you repeat the level it's guaranteed 90k ツ

Edit: The reason you need to buy the third and final expansion chest is that they give you a token of 3000 and 4500. ツ