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Rebecca

On the home page go to the top left corner and tap on the 3 lines or hamburger as it's called and tap on coin history 

Madison Primo

I personally don't know but I recommend one u have enough for a reward cash out... this way you can stick up on cards for a shopping trip due to only 1 care can be redeemed per 24 hours. Also eliminating the odds of you getting cought right when point increase if they do