Hello,
There is a known issue of the Massive Addons plugin that caused by server limits https://codecanyon.net/item/massive-addons-for-visual-composer/14429839/comments?page=36&filter=all#comment_14143143 https://codecanyon.net/item/massive-addons-for-visual-composer/14429839/comments?filter=all&page=79#comment_18501820 Please contact your hosting provider and ask to increase the maximum body length value.
You can download XStore import files here – https://www.8theme.com/downloads/ to import sliders of this demo version
Regards
