ad Problem with mobile devices and their shields being reported as "off". There is an unfortunate problem in the new implementation of the communication API in the new Avast Mobile Security release and a new version of your app should be available soon, that will eliminate this issue.
Generally regarding the information show in my.avast.com:
All apps (windows and android) are updated in intervals, that are usually couple of hours. Your device wakes at this interval and sends data to our servers, so we can show them in my.avast.com or push you updates, etc. This is to save you data traffic fees and battery life. You can increase this update interval manually if you want (on Android, go to Settings, choose your account and pick the desired frequency).
We are working on a brand new protocol, that would allow us to contact your device when needed. E.g. you enter my.avast.com and we will contact all your devices and give the most up-to-date info. This protocol will require synergy of all Avast teams and releasing new version of all our products, so it might take a little longer than we would like, but it will happen eventually.