A:AnswerGo on the App. Click on the watch picture on the top left corner. Then click on "Clock Faces". At the top select "all clocks", then select "Fred". Enjoy.
A:AnswerBe sure that your device can handle the latest version of the app. My kindle tablet couldn't upload the latest version, but it easily paired to my Galaxy S8.
A:AnswerA smartwatch is able to run apps written by 3rd parties at expense of battery life (usually max 2 days). Some fitbit devices do allow 3rd party development (Ionic or Versa) but with lots of limitations. But in general, depending on the model, you still get things like call/message notification.