Смотрите, у вас шорткод состоит из следующих блоков....
[vc_row][vc_column] .... [/vc_column][/vc_row]
Это шорткод от плагина Visual Composer
Дальше шорткод самой галереи (возможно, дополнения для Visual Composer)
bla-bla[mkdf_banner number_of_columns="three-columns" single_banner="%5B%7B%22image%22%3A%22408%22%2C%22hover_image%22%3A%22437%22%2C%22link%22%3A%22http%3A%2F%2Froam.mikado-themes.com%2Ftour-item%2Fmarmore-waterfalls%2F%22%2C%22target%22%3A%22_self%22%7D%2C%7B%22image%22%3A%22413%22%2C%22hover_image%22%3A%22438%22%2C%22link%22%3A%22http%3A%2F%2Froam.mikado-themes.com%2Fdestinations%2Fspring-hiking%2F%22%2C%22target%22%3A%22_self%22%7D%2C%7B%22image%22%3A%22419%22%2C%22hover_image%22%3A%22439%22%2C%22link%22%3A%22http%3A%2F%2Froam.mikado-themes.com%2Ftour-item%2Fsailing-adventure%2F%22%2C%22target%22%3A%22_self%22%7D%2C%7B%22image%22%3A%22431%22%2C%22hover_image%22%3A%22430%22%2C%22link%22%3A%22http%3A%2F%2Froam.mikado-themes.com%2Fdestinations%2Fforest-adventure%2F%22%2C%22target%22%3A%22_self%22%7D%2C%7B%22image%22%3A%22433%22%2C%22hover_image%22%3A%22432%22%2C%22link%22%3A%22http%3A%2F%2Froam.mikado-themes.com%2Ftour-item%2Fhiking%2F%22%2C%22target%22%3A%22_self%22%7D%2C%7B%22image%22%3A%22434%22%2C%22hover_image%22%3A%22435%22%2C%22link%22%3A%22http%3A%2F%2Froam.mikado-themes.com%2Fdestinations%2Fmarmore-waterfalls%2F%22%2C%22target%22%3A%22_self%22%7D%2C%7B%22image%22%3A%22454%22%2C%22hover_image%22%3A%22456%22%2C%22link%22%3A%22http%3A%2F%2Froam.mikado-themes.com%2Ftour-item%2Fmountains-hiking%2F%22%2C%22target%22%3A%22_self%22%7D%2C%7B%22image%22%3A%22457%22%2C%22hover_image%22%3A%22458%22%2C%22link%22%3A%22http%3A%2F%2Froam.mikado-themes.com%2Fdestinations%2Ftour-du-mont-blanc%2F%22%2C%22target%22%3A%22_self%22%7D%2C%7B%22image%22%3A%22459%22%2C%22hover_image%22%3A%22460%22%2C%22link%22%3A%22http%3A%2F%2Froam.mikado-themes.com%2Fdestinations%2Fmont-blanc-mountain%2F%22%2C%22target%22%3A%22_self%22%7D%5D"]
В Visual Composer найдите шорткод, который добавляет галерею и добавьте свою галерею. Подозреваю, что вы имопртировали демо данные и в ней отображаются ссылки, которые разработчик вставил в демо данные.