Excuse me, but did you install autoptimize and activated Wp fastest Cache in bomboniereroccaro.com/nuovo?
Why did not you use W3 Total Cache? I’ve read that XStore is optimized for W3 Total Cache or I’m wrong?
Please, could you be more detailed in your answer? Why if I analyze the site with gtmetrix I do not have the same results as pingdom? And also with google pagespeed tool the results are low.