Failing scraper

Hello all.

We are using Chrome. We are able to scrap about 12 pages (450-500) results before the scraper stops. In all we have 4500 results in total that need to be scraped and about 129 pages.

Ive removed all chrome extensions, moved the delays MS times from 3000 to 10000 and still not working.

Is there limitations or something that I dont know about?