I've set up a demo Azure site and wired in the messaging and blob providers. I am also running a local version connected to the same data sources and SQL. The blobs work correctly locally, and after running a script to import existing files, in the cloud. My issue is when I upload an image locally, visiting it on the Azure hosted version redirects me to my login page. I've checked access rights on the blob container and episerver and I should have access. After a few hours a clear cache / hard refresh will show the image. The image works instantly on the local version. Does anybody know how I can fix it so uploading a blob locally will show instantly in the cloud?

Blob container access policy: Have tried both Blob and Container

EPiServer 9.11
EPiServer.Azure 9.0.1