Only 2 green lights are flashing and nothing on the screen

[Bunny44]

Was getting only time of day on FB. Now, nothing except two green flashing lights on back of FB.

Moderator edit: subject updated for clarity

[WendyB · Accepted solution]

Try a restart. Sometimes doing it a few times helps. 

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

If that doesn't help
Email Support
http://help.fitbit.com/?l=en_US&cu=1&fs=ContactUs

Phone
877-623-4997