Something went wrong while loading game files and you cannot access the game? This could have happened due to a few reasons. Please check the following:

This could have happened due to a few reasons:
-        Using emulators or virtualization tools
-        Unfinished download
-        Using applications that interfere with Critical Ops
-        Unsupported device
-        Installation of unofficial game version
-        Using custom OS, jailbreak or root

Please check if you have one or more of the above, then take the appropriate steps to fix the issue. Backing up your files and resetting your device to factory default settings could be an easy solution that addresses multiple issues listed. When downloading the game, always use official installation sources: App Store, Amazon, Play Store.