Can't get all data after some pagination

Hi, i am trying to get data from java script pop-up window.
When i try without pagination i get all data with no problems but after second page i can't scrape data. Site has member login and pagination url doesn't change.
I don't understand where is the problem, on pagination or scraping?

Url: https://wwwb.com/

Sitemap:
{"_id":"project","startUrl":["https://wwwb.com/gallery"],"selectors":[{"id":"company","type":"SelectorPopupLink","parentSelectors":["_root","pagination"],"selector":".custom-title-fix > a","multiple":true,"delay":0},{"id":"popup_data","type":"SelectorText","parentSelectors":["_root","pagination"],"selector":"div.mCustomScrollBox","multiple":false,"regex":"","delay":0},{"id":"pagination","type":"SelectorElementClick","parentSelectors":["_root"],"selector":"div.offer","multiple":true,"delay":"2000","clickElementSelector":"div:nth-of-type(4) .pagination a","clickType":"clickOnce","discardInitialElements":"discard-when-click-element-exists","clickElementUniquenessType":"uniqueText"}]}

start Url is not accessible

Capture