Can't download from Play Store - need new ideas to try
Reboot your device and open it again 
If above steps fails,  please do clear data and cache in applications settings , and open it again for Google play store and play services
Or go for *Third party store for android * like Mobogenie


EDIT :

This step will stop the Play Store and clear data stored in a temporary area of device memory. This gives the app a fresh start and can help payments process properly. It won't delete any permanent files.

First, Force the Play Store to stop:


Open your device's Settings Settings. Scroll down and tap Apps or
Application manager (depending on your device, this may be
different). 
Tap the Google Play Store Play Store. Tap Force stop.


Second, clear the cache and data for the Play Store:


Open your
device's Settings Settings. 
Tap Apps or Application manager.
Tap Google Play Store Play Store. Tap Storage. Tap Clear cache. Tap Clear
data.


Next, reopen the Play Store:


Open the Google Play Store app Play Store.Try your download again.


I have found these steps from this link , i hope it will help you Click here