After upgrade from OAP 7.0 to 7.1 version vendor users that had the ability to log in under customers in BA control Panel have the link "To Control Panel" missing.
What is causing this issue?
The reason is that starting from 7.1 version either privilege
CONFIG_SECURITY is required to see "To Control Panel" link. A bug ID #PBA-80502 was confirmed regarding this issue.
Contact Odin Technical Support to work around the issue.
In order to trace the current status of #PBA-80502, contact your Technical Account Manager or Pooled Technical Associate Team (firstname.lastname@example.org).