You should specify the actual URL of Enterprise Server. When you opening your ES in the browser you should see "DotNetPanel Enterprise Server v1.0.1 is running..." message.
Multiple error messages above the modules are in two cases:
1. You are logged under "host" or "admin". Those two accounts are internal DotNetNuke accounts and they are not used for hosting management. User "serveradmin/serveradmin" account to manage your hosting. Error messages will be removed in the next DNP release.
2. You have wrong Enterprise Server URL specified. Login under "host" account and verify/change the URL.