WordPress site performance issue

Hello there,

I have built a wordpress website on Xstore theme. The website is having a lot of issue since it's gone live. It goes down again and again. The traffic is very minimal in 100's. Few errors in the console when it goes down are:
"Mixed Content: The page at 'https://skinroute.com/' was loaded over HTTPS, but requested an insecure script 'https://cdn.jsinit.directfwd.com/sk-jspark_init.php'. This request has been blocked; the content must be served over HTTPS."
'Get 'https://skinroute.com/ 500 (Internal Server Error)'
"Failed to load resoure: HTTP2_SERVER_REFUSED_STREAM"
'Get 'https://skinroute.com/ 409 (Conflict)'

When contacted to the hosting server they say we need to optimize the website. The google pagespeed insight is also low, for mobile it's in between 20 to 30 and for desktop it's between 40 to 50. The server is hitting it's threshold the host says.

I optimized images, enabled lazyloading. Minifying css, js and html is breaking the website. I can't understand what's the issue. I have tried everthing. 

The host says to:

1) Please optimize the scripts, plugins and images of the domain
2) Remove unwanted codes which are causing high CPU utilization.
3) Improve load time
4) Block suspicious IP addresses
5) Optimize all DB & websites for better performance.
6) Keep all plugins up to date.

You will need to work on improvement of parameters like
Optimize Images
Avoid large layout shifts
Avoid multiple page redirects
Avoid an excessive DOM size
Avoid chaining critical requests
Avoid long main-thread tasks
Defer Parsing JavaScript
Leverage browser cache
Minimize CSS Minimize Redirects

When I use plugins to delay js, defer js and minify css, js and html. The website breaks, some components do not display. Please help me out, this feels like a never ending process with the client. Link to the website: https://skinroute.com/

• This topic was modified 7 months ago by prakasharbadev.

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