Your save data is crucial to your mission, Agent. As long as you have synced your game with Google Play or Game Center, your game progress should be saved to the servers and it should carry over if you uninstall/reinstall the game or you change devices.
Transmitting data through time can be tricky. From time to time, your save data may not appear right away. If this happens, try these steps:
• Make sure that you have logged into the same Google Play or Game Center account
• Go to in-game Settings (Main page > cog icon) and link your game to your Google Play or Game Center account
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