hello slighq,
about issues 1,2:
- which browser are you using?
- which type of user do you use to login - vcops-admin, vc-administrator, or other?
- about that trial license - what type is it (foundation/standard/advanced) ?
can you pass a screenshot of the problem, to make it more clear where is the error 
about issue 3: "vCenter Health Service - Health Information Missing."
that means there IS a problem with the health service on your vCenter.
To investigate, login to VI-client, then go to "Home"->"vCenter Service Status" and see to the issues there.
thanks!