Connot Locate or Edit Hidden URLs on my Shopify Store

I have been DDoS’d this past year by a group I hired off of Fiverr to help with my SEO. It’s been a LONG journey our- but I am finally to the bottom of it and I cannot locate these hidden URL’s that are still programmed on my store.

  1. HOW does someone add pages to my store that not even I can locate but Google can pick up on and flag?

  2. How do those pages also have meta-data/SEO that I cannot locate/edit?

  3. How do I delete these pages?

Help? Anyone?