Errors in Pagespeed, Why?

Hello, my theme Gavick have errors in Page Speed de Google, Why?

http://screencast.com/t/iBn1L8ijM

PageSpeed: https://developers.google.com/speed/pagespeed/insights/

My domain: https://andybrad.com/

Hi,

These issues are not errors, but things to improve (suggestions)
Website speed doesn't depend on theme only, please check the example case study here:
https://tidycustoms.net/blog/increasing ... load-speed

If you are interested, please contact with tidycustoms: https://tidycustoms.net/optimization
It's a really good optimization service.