Hi.
In april i got the Android/iOS licence for free, but today i wanted to work on, on my game and i couldn`t run it on android. (Because of the missing license).
Didn’t i recognize that there was a timelimit?
Pretty bad. 
No it’s not time limit. Mine is still working with Unity 3.5.6. What version is your unity?
Do you have an android developer’s license from google?
I have 3.5.5. I will update and try again.
And i have no Android dev licence yet, but that is only for selling apps in the appstore. For debugging/installation direct over unity, i hadn’t a problem since now.
You could try reactivate the key you got, perhaps it might work.
Did you activate your free codes when you got them? They dont automatically apply to your license. If you never activate them you may have lost them, they had an expiration date but only to use. Once used they are permanent.
mhhh…
- i updated
- i reaktivated
- and i’m sure i “activated” them, becouse i worked until september on my game and played iton my android phone.
but it doesn’t work.
if i go to “https://store.unity3d.com/licenses” i see:
Well, at this point I’d contact support. There may be something funky going on in the validation. BTW: double check the version you have installed. If you have 4.0 your android and iOS licenses will not work.
If you update from 3.5.x to 3.5.x, there’s no need for reactivation. So there’s a good chance you updated to Unity 4.
No. I have downloaded 3.6. for sure! 
I just reactivated it because it didnt work…
I contacted the support, maybe they find out whats wrong.
thx at all for your posts!
greetings
Try activating the serial number that’s on your account inside Unity. Maybe when upgrading the license was reverted back to free.
OK guys. The support team (Thx for the great support ) helped me and i think they checked the error.
Now its working!
Thanks again to all!
greetings
theHU
Well I have the same problem, except I upgraded to Unity 4
Did you ensure to upgrade your license to unity 4?
otherwise they will no longer work as the free give away licenses for iOS and Android are for Unity 3.x only.