Placemark doen`t load on mobiles

Very strange.
Does second image - firefox browser?
I checked your page from my phone. All OK.
How many seconds do you wait until take a photo of your page without markers.
Probably you didn't wait until they be created.
Lets set buffer size to 10 or 1. And check again.

What buffer size do you mean?
I´ve been waiting over a minute on the fullscreen-map.

I mean in tab, where you enable JQuery loading map objects there is a field - buffer size, set it to 10 or 1

Clear joomla cache and browser's too

Could you provide me a screenshot where you mean.

I forgot, it's predefined values. Set to No.