This article relates to our product Cloud Drive Mapper
Version 2.2.xx and above of Cloud Drive Mapper requires the end user to have edit permissions on the SharePoint site that is being mapped. However it is possible to achieve using read permissions with the modifications detailed below.
Under > Site Permissions > Permission Levels > modify the permissions on read - Ensure that enumerate files and folders in a Web site using SharePoint Designer and Web DAV interfaces is ticked
If the above hasn't resolved the issue then the user can be added to the site visitors group under the permissions on the site and then retested.
If you have any questions about Cloud Drive Mapper and how it uses SharePoint permissions please contact firstname.lastname@example.org