Please see following thread for re-function of FlightRadar24, RadarBox24, Planefinder, and Graphs.
Re-imaging Made Easy
If you forgot your FlightRadar24 sharing Key, go to https://www.flightradar24.com, login to your account, then click following link and you will find your sharing key there:
https://www.flightradar24.com/account/data-sharing