If the PDF appears blank or grey, disable "Display PDF in browser" in your Adobe Reader internet preferences to force the file to open in the standalone app instead.
Below is a guide on how to fix common PDF-related issues on LitCharts and how to properly access their comprehensive library. Common Technical Fixes for LitCharts PDFs
Use the "Repair Installation" option in Adobe Reader via the Control Panel or re-download the latest version to ensure it can handle modern PDF standards. Understanding LitCharts A+ Access
The download links are specifically designed for desktop or laptop computers .