When adding a new org to a sandbox version of Flosum, you may see the following error: "Org already exist, You may not have permission to view the org."
Cause of the issue: When the sandbox is created, the custom settings from the prod org are moved to the sandbox. These custom settings are used to store the authentication credentials for the org. The sandbox creation process does not remove these settings.
How to solve the issue: Delete all the Custom Setting(Authorization details) records related to Flosum.
Instructions: Please be careful. Please make sure that you are performing these steps in a sandbox and not in production org.
Step 1: Develop > Custom Setting >>
Step 2: Click on manage link in from of "Authorization Details".
Step 3: And delete the records for the org (which you have problems deleting).