Customize theme changes are not being saved

Topic summary

Theme customizations are not saving/publishing; error shown: “online store editor session can’t be published.” Even when it says “saved,” changes don’t persist. User already tried refresh and incognito.

Support guidance centers on ruling out local issues:

  • Clear cache/cookies; try an up-to-date different browser
  • Switch networks (preferably mobile data)
  • Ensure OS/software are updated; try a different device
  • Test with a different Shopify-developed theme
  • If still failing, provide a screenshot, device details, browser/version, and theme name; 24/7 live support is available

A second merchant reports changes appear in the theme editor preview but not on the live site; they had edited template/JSON. Environment shared: Chrome (latest), Refresh theme, Basic plan, site heavenlyhomes.pro.

Latest staff advice: test against an unedited theme (no code changes) to rule out custom code issues; use incognito/private mode; if changes appear in preview, they should appear live unless browser caching serves an older version—revisit caching steps. Marketing resources were also shared via Shopify’s blog.

Status: No confirmed fix; awaiting user follow-up; issue remains open.

Summarized with AI on January 13. AI used: gpt-5.

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