How come when I try to transfer my progress on my iPad to my chrome book, it still goes on the “..

How come when I try to transfer my progress on my iPad to my chrome book, it still goes on the “Please Wait” screen and doesn’t change? I entered both of my possible account names and entered the correct account ID. Sure I could copy my OCs onto my chrome book but things like my friendship level and gifts are irreplaceable and would take much work.