Little problem with android

I signed for beta and get accepted. When i download the apk there is no problems but when i open the apk it said me that the app cannot be installed. I am on a Samsung S3. Help

Did it say a compilation error?

Okay i finally downloaded the game. The prob was that my SD card don't work correctly so i wasn t be able to download something

how to get the apk ??

You need to sign for beta. Then in gew days u received an email with a link to download

oh ok. thanks ^_^

I didn't got mail :( i signed in

I'm so fresh