I has the same prblem, i solved it in this method:
go to plugin settings and use this:
height: 300px (do not put any space between 300 (you can use your own value) and px, or, if you use percentage same thing with %)
width: same as up
object color: #558cff (as before, do not put any space between # and the value)
and same thing with background color.
I hope this can help you! ??
Bye!
