# Chess.com Help Center > Hey {{custom_data.Username}}! How can we help? ## Billing - [How can I cancel my membership?](https://support.chess.com/en/articles/9831222-how-can-i-cancel-my-membership.md): Learn how to easily cancel your premium subscription on both the website and the mobile apps, whether your account is active or closed. ## Account - [How can I change my username?](https://support.chess.com/en/articles/8557649-how-can-i-change-my-username.md): You can change your username every 90 days on both the Chess.com website and apps. Learn how to easily update your username here. - [I had a bad start on Chess.com. Can I close my account and start a new one?](https://support.chess.com/en/articles/8588153-i-had-a-bad-start-on-chess-com-can-i-close-my-account-and-start-a-new-one.md) - [How do I delete my Chess.com account?](https://support.chess.com/en/articles/9829268-how-do-i-delete-my-chess-com-account.md): Learn how to permanently delete your Chess.com account and all associated data. This is not the same as just closing your account! ## Troubleshooting - [How do I report a bug or make a suggestion?](https://support.chess.com/en/articles/8583752-how-do-i-report-a-bug-or-make-a-suggestion.md): Learn how to use the Chess.com Support widget and bug reporting tool to report bugs you're facing or send a suggestion! - [I'm having technical problems! What should I do?](https://support.chess.com/en/articles/8648692-i-m-having-technical-problems-what-should-i-do.md) - [What is a server restart? When do they happen?](https://support.chess.com/en/articles/8609617-what-is-a-server-restart-when-do-they-happen.md) - [How do I screenshot and screen record?](https://support.chess.com/en/articles/8701409-how-do-i-screenshot-and-screen-record.md): Learn how to take screenshots or record your screen on Windows, macOS, Android, and iOS to share bugs or issues effectively with Chess.com Support. - [I'm getting error code RG45. What should I do?](https://support.chess.com/en/articles/8583549-i-m-getting-error-code-rg45-what-should-i-do.md): Learn what error codes RG45 and RP13 mean on Chess.com, why they occur, and how to contact support to resolve the issue. ## Mobile - [How do I play in person against a friend on the app?](https://support.chess.com/en/articles/8583716-how-do-i-play-in-person-against-a-friend-on-the-app.md): Learn how to use the 'Play in Person' feature on the Chess.com app to enjoy a game in person without the need for a physical board. - [I'm having issues with my mobile app. What can I do?](https://support.chess.com/en/articles/8589704-i-m-having-issues-with-my-mobile-app-what-can-i-do.md): Having issues with the Chess.com app? Try reinstalling to fix login errors, crashes, or update problems on iOS and Android. - [How do I turn on Confirm Move?](https://support.chess.com/en/articles/8609803-how-do-i-turn-on-confirm-move.md): Learn how to enable 'Confirm Each Move' to avoid accidental taps and ensure every move is double-checked before it’s played. - [How do I disable haptic feedback?](https://support.chess.com/en/articles/9211337-how-do-i-disable-haptic-feedback.md): Learn how to manage haptic feedback on the Chess.com app and control vibrations for moves and low-time alerts during your games. - [How can I optimize battery life on my mobile device?](https://support.chess.com/en/articles/9736161-how-can-i-optimize-battery-life-on-my-mobile-device.md) - [How can I play Chess960 on the Chess.com app?](https://support.chess.com/en/articles/9835535-how-can-i-play-chess960-on-the-chess-com-app.md): To play Chess960 on the Chess.com mobile app, go to Play > Custom and change Standard to Chess960. - [Does Chess.com have an app?](https://support.chess.com/en/articles/9855741-does-chess-com-have-an-app.md): Use the links in this article to download the app on your mobile device and start playing on the go! - [How to play against yourself on Chess.com](https://support.chess.com/en/articles/9859892-how-to-play-against-yourself-on-chess-com.md): You can use Analysis to simulate a game against yourself, or try Pass and Play on the mobile app to control both sides in a match. - [How do I install the Chess.com widgets?](https://support.chess.com/en/articles/12504485-how-do-i-install-the-chess-com-widgets.md): Learn how to install and use our mobile widgets to track your streak, puzzles, or games right from your home screen. ## Sportsmanship - [What is Chess.com's sportsmanship policy?](https://support.chess.com/en/articles/8598007-what-is-chess-com-s-sportsmanship-policy.md) - [What is a Sandbagger?](https://support.chess.com/en/articles/8583380-what-is-a-sandbagger.md): Sandbagging is when a player intentionally lowers their rating by losing on purpose. Learn more about it and how to spot sandbaggers here! - [What is Stalling?](https://support.chess.com/en/articles/8584203-what-is-stalling.md) - [How does game abandonment work?](https://support.chess.com/en/articles/8593801-how-does-game-abandonment-work.md): See why games are marked abandoned or lost on time after a disconnect or lag, even if your connection seems fine, and learn how the timers work. - [What is vacation abuse?](https://support.chess.com/en/articles/8609526-what-is-vacation-abuse.md) ## Safety - [How can I stay secure on Chess.com?](https://support.chess.com/en/articles/8615124-how-can-i-stay-secure-on-chess-com.md): If you suspect your password has been compromised, there are steps you can take to protect your account. ## Variants - [How do I play chess variants?](https://support.chess.com/en/articles/8583983-how-do-i-play-chess-variants.md): Learn where to find and play your favorite chess variants on Chess.com. - [How can I make my own chess variant?](https://support.chess.com/en/articles/8609332-how-can-i-make-my-own-chess-variant.md): Ever wanted to create your own chess variant? You can on the Chess.com Variants page! Learn how to do it here! - [How do I play variants on the Chess.com app?](https://support.chess.com/en/articles/9836648-how-do-i-play-variants-on-the-chess-com-app.md): Variants aren't available on the Chess.com apps, but you can play them on your mobile browser, though it may be less optimal.