I hope you are well today and thank you for your question.
I logged into your site and saw this was happening because you had not activated Slider Revolution plugin on your site as displayed in the attached screenshot.
I have activated it now and the slider is displaying fine for me now.
Just one more question/problem: if we edit a page, it give us az 500 error, and the page is not available for 5-10 minutes. And one more important information: in theis case our Cpanel is offline too!
On the same hostinge we have many other site/templates, and with there sites we have no problem. Do you know what couse the problem?
Now we discussed with our hosting company. The problem is the ModSecurity. If we disable it off, it’s working. Do you know what is the reason why it’s conflict with the ModSecurity?