We recently started a Facebook Contest and on this page you can check if the contest is still ongoing or expired.
Edit 2016-01-25:
The status is currently: EXPIRED, the winners will be announced shortly.
Edit 2016-02-01:
The winners have been picked and contacted. If we missed to add any time to anyone’s account, please contact us and we will fix that.
Please stay tuned for upcoming events and contests!!
We at PandaPow will announce the winners in early 2016, but remember that EVERYONE that participates will get AT LEAST 1 month for free added to their account!