Our app is not designed to modify your robots.txt file or change the indexing on specific pages.
Shopify automatically generates your shop's robots.txt.
It has been well-written and tested on thousands of popular shops that perform well in search engines.
Pages like Search and Cart are intentionally blocked by the robot.txt to protect your SEO.
You can, however, modify your theme code to no-index pages by following the instructions from Shopify here: Hiding a Page from Search
Any questions? Email us at: [email protected]