The live URL changes only when a newer task completes. Refresh after that, and do not expect a scheduled task to have published yet.
Compare a heading from the latest completed preview with /apps/llmtxt/llms.txt. If they differ, the latest task is not the one that is completed.
Compare the two
- Find the latest completed task
- Compare its preview with the storefront
- Refresh the storefront URL
- Try /llms.txt as well, since it redirects
Password-protected storefronts can hide the file from you while you are logged out. Open it in a browser session that can see the store.