Older store versions frequently encounter "Check your connection" or "RH-01" server errors.
Newer app versions require updated Play Store security certificates to install. what phone model you are using
To install an APK file not from the Google Play Store, you must first allow your device to install apps from other sources. what phone model you are using
To help you get your device running perfectly, let me know if you run into any during setup, what phone model you are using, or if you need help finding the Google Play Services link. Share public link what phone model you are using