What should I do if Error 20110 persists after trying basic troubleshooting steps and device restarts?

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Grade: Education Subject: Support
What should I do if Error 20110 persists after trying basic troubleshooting steps and device restarts?
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If the error continues, check the official Pokémon Masters EX social media channels or the in-game news for any announcements regarding server maintenance or widespread issues. Try connecting to a completely different network (e.g., a friend's Wi-Fi, a public network) to rule out problems with your home network. As a last resort, consider reinstalling the game entirely (but only after confirming your account is securely linked to a Nintendo Account). If all else fails, contact DeNA customer support with detailed information about your device and the steps you've already taken.