Screen scaling on ADE when fixed layout epub is exported

Hi, I've been having troubles when opening a fixed layout epub on ADE in Windows. The epub was designed on MAc, and it doesn´t have problems when opening it on ibooks or ADE on Mac, but when is opened in ADE on Windows, some of the screens (not all) are scaled. I've checked the code, but it doesn`t have any issues.

Hope you can help me.