I've collected 10 premium gacha scrolls, but there's no option for using all 10 scrolls at once, just 1 scroll or 6k diamonds. Is this a bug? I've noticed that when doing normal or friend gachas, I had to select the gacha, select another gacha, and then go back to the desired gacha to have the 6k diamonds be replaced by the scrolls/FP. This method doesn't seem to work for the premium gacha however.