@shein i understand from your answer that you do not work in the tech industry – the way a scraper works you may never know if or why something is being blocked by a filter unless you carefully analyze the results and a lot of deals are extremely time sensitive if you speak to someone who works as in the tech industry they will probably do a better job of explaining it to you.
@DaasYochid try telling your boss/investors that you want someone looking at your history and see how far that gets you. (especially if you work for a data aggregation company)