My Fitbit Charge 2 stopped floors for a few days, 4, but now seems to be back to normal. Why?

Your fitbit needs to be switched off first, to reboot everything. then it will behave as if it,s just starting off, the settings should be easy to find that way

Hi , you can download the Fitbit 2 manual here.

Of course you can do it with a screen protector.
The Guide Of Reset Fitbit Charge HR Complete Guide

To charge your tracker:

1. Remove your tracker from the wristband:
2. Insert your tracker into the charging cable. ...
3. Insert the charging cable into a USB port or UL-certified USB wall charger.
4. Your Flex's LED indicator lights will pulse to show the battery level every few seconds.
More items...

Help article: How do I charge my tracker? - Fitbit Help

https://help.fitbit.com/articles/en_US/.../How-do-I-charge-my-tracker Fitbit
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Help article: How do I charge my tracker? - Fitbit Help

https://help.fitbit.com/articles/en.../How-do-I-charge-my-tracker

FitbitDec 12, 2015 - To charge your tracker: Remove your tracker from the wristband: Insert your tracker into the charging cable. Insert the charging cable into a USB port or UL-certified USB wall charger. Your Flex's LED indicator lights will pulse to show the battery level every few seconds.

Fitbit Help - Getting Started

Fitbit Store: Buy Surge, Charge HR, Charge, Flex, One, Zip ...

https://www.fitbit.com/store

FitbitBuy Fitbit devices and accessories at our official online store for free shipping on $50+, 45-day money back guarantee and 1 ... Interchangeable Bands ... Fitbit Charge HR™. HEART RATE + FITNESS WRISTBAND .... United States (change).

Fitbit Charge HR Review: This Is The One You Want

gizmodo.com/fitbit-charge-hr-review-the-king-of-fitness-tracke...

GizmodoFeb 4, 2015 - The Charge HR, on the other hand, has a standard watch strap with a closure that ... Well, most fitness trackers out there are really just glorifiedpedometers. ... With the HRM, I took my pulse (or had a friend take it) and then check the display. ... Fitbit claims the Charge HR will last "up to five days" on a fully ...

Fitbit Charge HR Fitness Wireless Activity Wristband Review

You can put the software right, with a reset. Hardware errors and batteries won't change a bit when you use the reset button. When the battery is bad, and it looks that way, just return the Fitbit and ask for a new or new battery. It still should be under warranty. If the warranty is only 90 days for the battery, never again buy a Fitbit in the place you are living. In Europe electronics have a warranty of 24 months.