Hello,
First and foremost, are you trying to login to KMC with the admin partner created during the install or did you create a partner from the Admin Console? if the first, then this is problem number one, you need to create a partner from admin console and use it in KMC.
If this is not the issue, please describe exactly what the action you are taking is and what happens.
This includes:
- opening your browser's dev tools and looking for errors in the Network and Console tabs
- running:
# kaltlog
from the shell and looking at the outputted errors and then going to the logs under /opt/kaltura/log and looking at the lines before the actual errors to understand what caused it.