Fix Shopify Product Variations Display

I'm seeking a skilled Shopify developer to resolve an issue with product variations not showing up on the product page. This problem started after I changed the theme and is affecting specific products only.

Key Requirements:
- Diagnose and fix the issue with product variations not displaying on certain product pages.
- Ensure compatibility with the current theme and any installed apps.
- Verify that the solution works across all affected products.

Ideal Skills and Experience:
- Strong expertise in Shopify development and theme customization.
- Experience troubleshooting and resolving product variation issues.
- Familiarity with Shopify's theme architecture and app integrations.
- Good problem-solving skills and attention to detail.

If you have the expertise to help me resolve this issue, please reach out with your proposal.