[Android] Some players who updated Android System WebView may not start the game
GungHo has confirmed that this is an issue and is currently investigating the issues. Stay tuned for updates I guess.
This applies to NA version as well.
Temporary workaround (thanks Upc)
Uninstalling updates of android system webview then restarting the system may work temporary.
If there are alternative or better workarounds, let everyone know in comments! 🙂
The NA team tweeted that this has been fixed by Google