Google Search Console Optimization

[AVsupport]

Have successfully added our .square.site to Google Search Console.

Now Google is looking at it, I get some emails with optimization recommendations:

First:

Search Console has identified that your site is affected by 4 Product snippets structured data issue(s). The following issues were found on your site.

Top non-critical issues‡

Missing field "review"

Missing field "aggregateRating"

Missing field "offerCount" (in "offers")

Missing field "priceValidUntil" (in "offers")

‡Non-critical issues are suggestions for improvement, but do not prevent the page or feature from appearing on Google. Some of these issues can affect your appearance on Search; some might be reclassified as critical issues in the future.

We recommend that you fix these issues when possible to enable the best experience and coverage in Google Search.

Second:

Search Console has identified that your site is affected by 3 Merchant listings structured data issue(s). The following issues were found on your site.

Top non-critical issues‡

Missing field "shippingDetails" (in "offers")

No global identifier provided (e.g., gtin, brand)

Missing field "hasMerchantReturnPolicy" (in "offers")

Third:

Search Console has identified that your site is affected by 4 Page indexing issue(s). The following issues were found on your site.

Top Issues

• Alternate page with proper canonical tag
• Duplicate, Google chose different canonical than user
• Excluded by ‘noindex’ tag
• Duplicate without user-selected canonical

Since I cannot make changes on the (weebly hosted) Square site, is this an issue, can I do anything to optimize how Google sees the page and thus improve SEO?

Or do I just need to walk away and consider a full blown e-commerce site..?