Meizu haven't yet passed Google certification, so Meizu phones can't be sold with pre-installed Google Services and Google does not guarantee that any of their apps will work on Meizu devices. It's perfectly normal that it says "Uncertified" in Play Store settings - everyone has that and it should not affect your ability to use Play Store.

What exactly is the problem? How does Play Store react when you're trying to download an app? Is there a message or an error code?

If you're not using Wi-Fi, Play Store may not start downloading an app with mobile internet - you have to swype down the notification bar and unpause the download.

Thanku kshogin..
In pic you can see it says waiting all the time..
i m using jio net...
same happens when i try to download any attachment from gmail..
even when i use flyme browser ..downloading something flashes same message..
waiting..

any one please help