How can I speed up mobile version of Catch Box?

I love the responsive capability of Catch Box, but Google PageSpeed Insights is rating my BibleTruths website Desktop=99 and Mobile=68 (which is too slow). How can I make these changes that Google PageSpeed Insights is recommending for the mobile version?

• Eliminate render-blocking resources (Desktop=0.3 Mobile=1.56)
• Enable text compression (Desktop=0.28 Mobile=1.35)
• Remove unused CSS (Desktop=0.16 Mobile=0.75)

Why are these so different between Desktop and Mobile? Could W3 Total Cache be handling them differently? Thanks in advance for your consideration of this issue. Hope and pray you have a blessed holiday season. Regards, David