Restart the mobile (sometimes a restart fixes everything).
Then try also to give it to force arrest. Go into Settings > Applications > Clash Royale > delete data. Enter Play Store, search for Clash Royale and give it to update.
Restart the mobile (sometimes a restart fixes everything).
Then try also to give it to force arrest. Go into Settings > Applications > Clash Royale > delete data. Enter Play Store, search for Clash Royale and give it to update.