[Observium] Full access live demo?

Hello guys I'm currently looking for a monitoring tool and try a lot of them (freeware, opensource, etc...) Observium sounds good for me, definitely. I checked the live demo and can't access to the threshold/alert options, which are the most interesting part for me. I know if you give access as a admin to your demo, your Observium demo will be destroy within 1 minute. So before paying for a pro version, is there a possibility to test a live demo as a admin user or install a "time limited full version" on my VM ? Regards, Aurélien