Philips Sonicare DiamondCleanSonic electric toothbrush

In which countries is the Sonicare app available?

Can I use my Sonicare AirFloss charger to charge my toothbrush? 

How does the brushing guidance work in the Sonicare app?

How do I change the intensity settings on my Sonicare toothbrush?

Why is there a gap between my brush head and handle?

My brush head is difficult to attach or remove.

My Philips Sonicare toothbrush makes a loud noise

I cannot connect my toothbrush to the Sonicare app

My brush head falls off my Sonicare toothbrush

My Sonicare toothbrush is not vibrating