The initial setup screen doesnt work.
When it does work you have to choose between whether you want your specific workout history, sleep data, resting heart rate (use Mio Go) or your simplified daily activity score (use Mio PAI). Syncing to one wipes data from your Mio device and renders it forever lost. Insane that theyd release two grossly incompatible apps.
NoxD about Mio GO, v2.6.3