Google coverage - zero valid pages, all excluded

Hi - I have a shopify site that was working fine with google searches until sometime in the last 6 months. The issue is that in the coverage section it says I have zero valid pages, despite having zero with errors - all 37 pages are excluded. Looking at the reasons that google gives for pages to be excluded, the majority (28) are due to google claiming that I have pages with a redirect, even though I don’t have redirects in place and I have confirmed with Shopify that this is definitely the case and shouldn’t be a problem. Unfortunately shopify say they are unable to help me any further as the issue is at the google end - while that may be the case it doesn’t help me resolve my issues.

Can anyone suggest how to resolve?