@Robin Tan Thanks for posting your query on Microsoft Q&A.
The URL blob.core.windows.net is not the correct url to access azure storage static website. The correct URL will end with web.core.windows.net.
You can find more details about how to locate correct URL for your static website, by following this link - https://learn.microsoft.com/en-us/azure/storage/blobs/storage-blob-static-website-how-to?tabs=azure-portal#find-the-website-url
Find the website URL on Azure Portal:
In the pane that appears beside the account overview page of your storage account, select Static Website. The URL of your site appears in the Primary endpoint field.
I hope this helps.
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