Hi,

Thank you for purchased our theme.

You can check this guide to know how to improve your site speed: https://pencidesign.ticksy.com/article/11405  

Also, recently the google speed insight just updated the rules for mobile and it will calculator the real speed of your site on mobile when load with 3G from a server located at US.

So, most of the site on the internet has low speed  insight score at this moment. If you want to get more score on google speed  insight, you need to use more an CDN like CDNSun or MaxCDN This is issues from the hostings/servers and we can't affect much to the score because the server decide up to 80% the speed for mobile on google speed insight.

But, really as I saw, Google speed doesn't affect anything to your SEO or other things. You just need to feel your site is not slow for you is ok

Best Regards,

PenciDesign