Site is loading very slow on template 553

[Skills]

I don't know exactly were the problem is coming from, but with a test from pingdom, my site in loading in 18 seconds. I am using Abantecart 1.1.8 and bought the template 553. My hosting is one of the best from a quality point of view in my country, and when i contact them to support in this matter, they said that the website is taking too long to prepare the necessary informations. I tried everything, compressed images, css, html, cache, but the result was minimum. I have invested a lot of time and money in this and will not have a positive impact because of the very slow loading time.

[abantecart]

Try this test http://tools.pingdom.com/fpt/

[Skills]

I tried with pingdom, and i did almost all the task involved there, except "Serve static content from a cookieless domain", the total time dropped by 5 seconds, but still i have a long time waiting until the page is totally loaded. I attached some picture, with the tests from pingdom. Thank you.

[abantecart]

Check with your hosting company.