Hey Guys,
I was having some issues with playstore as well , but i got it working.
It was either giving me an error when i would try to download , or it would flash a white screen twice when trying to open the app and do
nothing at all.
BTW this is for the firmware before this beta,
Here are the steps i took.
1. Reboot your mygica
2. Goto to your Settings -> Apps screen
3. Scroll over to your running apps.
4. Under Google Play Services enter and click clear data
5. Under Google play Store Do the same *For Steps 4 and 5 if clear data is not an option click clear cache
6. Go back to your network settings and enable both wifi and ethernet( if available)
I believe you need wifi as the main though
7. Test it out
It might stop working after a few days and you will need to repeat this.
Let me know how it goes