Hello,
1) Do you have this problem if parent theme is activated? If this situation is caused by the child theme, you need to check your changes in files of the child theme. We are not responsible for custom changes in files.
2) As I can see, the posts are showing – http://prntscr.com/qh3rl4
3) Add this code in Theme Options > Custom CSS or in style.css file of child-theme:
.carousel-area .productCarousel .owl-nav {
opacity: 1;
}
Regards