If Google Play prompts you to load a different game, it means your device has been connected to another Google Play account.
To stop these prompts, either:
Sign into the correct Google Play account connected with your original game, or
If you still have not connected your game to Google Play, you need to add a new GP account to your device by entering your device's Settings > Accounts > Add account (please restart your device after adding a new account)
Remember to connect your base to Google Play with the Google Play Sign-In button.