I upgraded the owncloud server to version 10.0.2, for some reason the backend authentication is not working so unless you specifically create an account in owncloud, it will not recognize your username and password. I am working on this. If you do create an account, use the same username and password so that when I get the backend authentication that calls the system authentication method working again, it will match.
Also many of the apps are gone or no longer supported in this version. I am researching where to find current versions to replace them.