Plesk administrator can not see Files tab and Database link of customer's subscriptions.
Owner of subscription doesn't have permissions Create and manage databases and Upload and manage files .
This issue has been considered as software issue #PPPM-2008 and will be fixed in future Plesk updates.
Check Customer permissions under:
Home > Subscriptions > <subscription_name> > Users
Click on with role Owner to check whether the Owner has permissions Create and manage databases and Upload and manage files .
Assing to Owner missing permissions:
Use the following command:
# /usr/local/psa/bin/role --update Owner -owner <customer's_username> -databasesManagement true -filesManagement true
--help for more information:
# /usr/local/psa/bin/role --help