PenciDesign replied
Hi,
1/ I still can access to your site without any issues. Also, the issues about error 502 come from your server - not from the theme. We have a lot of customers use on shared hosting and it working fine.
2/ For speed issues, please check this guide to know how to improve your site speed:
https://pencidesign.ticksy.com/article/11405
Because GTMetrix tested your site on server located at Canada - so, if you want to make your site faster for all countries in the world - let's use CDN - example: MaxCDN - https://maxcdn.com/
Best Regards,
PenciDesign