Bug can't hatch 20gems

Did you buy 20 gems?

Ya, i’ll try to buy 20gems

The sale gems only count for half.

So it’s not work now?, Or i need to have 40gems?

Only half of the sale gems count as paid gems. So you need to buy the 13+13, 6+6 and 1+1 to get the 20

Ah… like that, ty sir