Can't switch to another screen

[Plavastara]

For the second time in a week my tracker is jammed. Can't switch to another screen then the clock screen. Is there a way to reset the tracker.
Or anybody else experiencing the same problem?

Moderator edit: subject updated for clarity 

[Rich_Laue · Accepted solution]

Try this:

http://help.fitbit.com/articles/en_US/Help_article/How-do-I-restart-my-tracker/

[Plavastara · Accepted solution]

It works again Thnx