ติดปัญหาตรงไหน บอกเราได้

• iPhone: check the side silent switch — if it shows orange, the app is muted. Flip it back and turn up the volume.
• Android: raise the "Media" volume (not the ringer) and make sure audio is not going to a Bluetooth headset left in another room.
• Today's clips download the first time you open the quest while online. If you first opened it offline, reconnect and open the quest once more.
• Still nothing: force-quit and reopen the app, or email us the question number.

Yes, if the account is not linked — an anonymous account lives only on that phone. Before reinstalling or switching, go to Settings → Link account and choose Apple or email, then sign in with the same account on the new phone. Streak, statistics, predicted score and subscription all come with you.

At the store, not in the app — and deleting the app does not cancel it.

• iPhone: Settings → your name → Subscriptions → 990club → Cancel, or apps.apple.com/account/subscriptions
• Android: Play Store → profile → Payments & subscriptions → Subscriptions → 990club, or play.google.com/store/account/subscriptions

Cancel at least 24 hours before the renewal date. You keep access until the end of the paid period, and your statistics stay.

Payments are handled entirely by Apple or Google; we never see them and cannot refund directly. Ask the store: Apple at reportaproblem.apple.com, Google via the Google Play Help Center. The store decides under its own policy.

Entitlement is checked on our server, not on the phone. Force-quit and reopen the app once while online. If it still does not clear, email us with the store receipt (Apple emails it to you; Google shows it in order history) and we will check. Nothing is charged twice while you wait.

If subscribing on Android is not working yet, it means we have not opened payments through Google Play. The 7-day trial works as normal, and once payments are open you can subscribe without updating the app.

In the app: Settings → Delete account → confirm. Or email admin@games.ploikhong.com from the address linked to your account. What gets deleted and how long it takes is on the account deletion page. Cancel your subscription at the store first — deleting the account does not cancel it.

That is deliberate. We need at least 60 of your answers per section (listening and reading separately) before committing to a single number. Until then it shows a range; once it is a number it updates weekly rather than swinging with every answer. Taking a timed mock test makes it more accurate.

Yes, the whole thing. Today's quest is preloaded on the phone, answers are stored locally and sent automatically when you are back online, and XP and streak update then. You can close the app; nothing is lost.

Use the report button on that question's explanation. We read every report and can pull a problem question from the bank immediately, without waiting for an app update. Or email us a screenshot.

The reminder is scheduled on your phone for the study time you picked during setup. Check that notifications are allowed for 990club in your phone's settings; on Android also check battery-saver modes, which can silence app notifications. You can turn the reminder off there too.