Here is an article on this topic.
Does Freedome auto connect again once your phone is unlocked or back from idle? Does your phone have internet connection when it is locked or in idle state?
No, it doesn't auto-connect, unless I open the app. When doing so, the big central status will be immediately showing "on", and you'll see it "connecting..." for a few seconds, then it's connected and the little key icon in the Android status bar comes back on.
And yes, the phone has quasi-permanent Internet connection; if not WiFi, then certainly GSM.
Can you have a look at this article regarding the same issue and see if it helps?
If you are still having the same issue, I recommend opening a support ticket or chat with our support team so that this can be investigated further.