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Ultimately, you may be causing more of a problem for yourself if you keep playing. If the game can't connect to the internet, it won't be able to save your level progress. Which means if you clear many levels and then reconnect one day, you could lose a lot of levels!
Hi and Welcome to the King Community
Game not connected, or some other reason, you may face such problems. You can check out some troubleshooting below.
Try Check app update - Log out game - Restart Device - Open game and Log in.
If not works you need to reinstall the game app after uninstalling to get the solution. Uninstalling the game app will cause you to lose all stored booster
Ultimately, you may be causing more of a problem for yourself if you keep playing. If the game can't connect to the internet, it won't be able to save your level progress. Which means if you clear many levels and then reconnect one day, you could lose a lot of levels!