10?!!! Oh wow! That's a lot should have been 4 maybe 5. It's odd they are flat, they should be exploding.
Do you have them at room temp? If you put them straight into the fridge the yeast I'll go to sleep and not eat the sugars.
That should be plenty of sugar, 2 weeks isn't much time, put them somewhere out of sight and forget about it for another 10 days.
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