I have updated the topic. 
Topic summary
Product quick-view popups in the home page grid stopped showing variants and the Add to cart button after an accordion was added to product pages. Screenshots showed the grid looked normal, but the quick-view modal displayed no details.
Access was granted to oddlysocks.se (password temporarily removed). A previously disabled right-click wasn’t an obstacle for the helper.
Diagnosis: The issue was tied to the quickview section likely being hidden—potentially from theme settings, a theme update, app conflicts, or accidental changes.
Fix implemented: Add a CSS rule to base.css to force the hidden content to display:
- Theme > Edit code > open base.css
- Paste: .product__description.rte.quick-add-hidden { display: block !important; }
- Clear cache if needed.
Outcome: After adding the CSS, the quick-view showed the expected details and functionality. The preview now behaves correctly.
Status: Resolved. Helper offered further assistance if needed.