Philips Sonicare FlexCare PlatinumSonic electric toothbrush

In which countries is the Sonicare app available?

How does the brushing guidance work in the Sonicare app?

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

How do I enable or disable the pressure sensor on my Sonicare?

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