Hi, I understood from your description that you have added few basic speed optimization tools.
Now your site need to optimize with advance level optimization method, I will use unique optimization method that will work for long time.
The W3 total cache plugin is not good enough. I will add another one or configure autopimizer properly to speed up and reduce loading time.
List of Some optimization works:
Optimize/Minify CSS, JS, HTML.
Enable & configure Caching
Optimize images, jpg, png,
Enable compression.,
Combine css and js files.
Fix Leverage browser caching issue,
Reduce server response time,
Optimize google fonts.
Clean & optimized database and tables
Eliminate render-blocking JS & CSS
Remove query string
Enable Keep-Alive.
Configure CDN
Make fewer HTTP requests.
Reduce DNS lookups.
Configure ETags
Quick Loading External files.
& more..
I will provide you more details on google ranking. Will help to get index and increase rank.
I have 10+ years of experience on Speed optimization, Design and development, SEO and more.
Skilled on Wordpress/Joomla, CSS, JS, HTML, PHP, MySQL, Linux or Windows Server, AWS, ftp/cpanel management, CDN setup, Internet Marketing and other related skills.
** I have completed more than 220 speed optimization projects with full satisfaction.
thanks.
mizan