Site not reachable for past 2 days for some customers

It’s an eCommerce website. A lot of customers have reported site is not reachable. Issue happening for past 2 days. I have contacted Shopify and Godaddy. I was told to contact Cloudflare regarding the issue.
I a using free plan.

Not sure what to do here?

Are you able to share the domain name for the website so someone can look?