Stairs, a lot of stairs

Try setting the altimeter/barometer into the manual barometer mode, when you stay home.

I tried what you said After your message but no, It doesn't work...

Hm, weird, I would not expect floors being counted if the elevation does not change. Or does it still change despite the manual baro mode? Anyway, I recommend reporting it to the Support.

It still change despite the baro mode. Until now It counted three floor. 

 I Will try to report It but the italian support it Is unable to help.

9616464 said:

I Will try to report It but the italian support it Is unable to help.

Yes, I would not expect that they could help, but it is important to report similar issues anyway, because they collect data, and if they see a pattern, or often occurring issues, they may decide passing it to the headquarters, or directly to the developers.

Well I changed the instinct solar with the instinct 2....apparently it works better

Thanks for reply :) So I'll be waiting for Garmin to respond to support ticket