animate is blank animate 20.5.1 and 20.0

So I just installed Adobe animate 20.5.1 and when I tried to take the tutorial the composition didn´t showed up, but in timeline I can see there is a draw, I tried to downgrade also but even in Animate 20.0 I have the same issue, I draw lines or circles, and I can see it in the small timeline even I can export what I draw but can´t preview anything, please, I f anyone can help, I use WIndows 10.