[Please stop posting in uppercase. It's the electronic equivalent of shouting and is considered quite rude. Post title de-capped.]
I'm not sure how the developers (Kaltura) expect to charge for a service that is broken and was reported as broken six months ago.
The plugin touts repeatedly that it works with WordPress Multisite - it does not. It breaks the Network admin - complete blank of every part of the Network administration section. The only way to get back into it is to disable the plugin or FTP in and delete it.