3D FlipBook - hello I have download the lite version of the app and I have the same problem as other users stated of the books not showing

hello I have download the lite version of the app and I have the same problem as other users stated of the books not showing in the Microsoft edge browser I have searched the comments but I haven’t found a solution. this is the website’s link

https://parentcoachingcyprus.com/εκσα/