I released the manual in Public Folder, but people can't access it and get the "Content cannot be displayed as this folder is not released." message

2021-04-06 06:31:50 UTC 2021-09-22 01:55:33 UTC

There is a possibility that public folder release settings are set to "Unrelease".

In the "Folder settings" → "Release settings", make sure "Release" is selected under "Release outside".
*The default value is "Unrelease".