Hi
I use both these Avast products too and have found the same issue that my phone shows the anti-theft is not installed. However on checking my online Avast account, it shows my device does have anti-theft installed, so I'm guessing it's supposed to show it like this. Maybe for security reasons if someone takes your phone and checks the apps, they won't know anti-theft is installed. I don't have the Premium versions installed, only the free versions at the moment.