What the button does on each phone
The Download APK control requests https://www-game.com/api/download-url?from=rs9.world. On Android, that response is a package file. On iPhone and iPad, this site does not save a package. The tap is sent to the contest, which opens in the browser. Safari's Share, Add to Home Screen, stores a bookmark. A bookmark has no package name and no permission list.
Android 8 and later
- Tap the button in Chrome. The download notification shows the file name. Tap the notification, not a second copy you found in a chat.
- If the system says the install is blocked, open Settings, Apps, Special app access, Install unknown apps. Choose Chrome. Allow from this source. The switch belongs to Chrome, not to the whole phone. Firefox, if you used it for the download, needs its own switch.
- Open the file again. The package installer shows an app name, a version, and a size. This page prints none of those three, because the file at the URL can be replaced. Write down the version the installer shows if you later email rs9support@email.com.
- Read the permission list before you tap Install. Stop if it includes SMS, contacts, or accessibility. The reason for each stop is on the permission page.
Android 7 and earlier
Those versions use one switch for every app: Settings, Security, Unknown sources. Turn it on only for the minute of this install, then turn it off. A phone that stays on that switch will install a later file from any app without asking again.
After it is installed
Open the app from the launcher. The login host you should see, if it opens a browser tab, is rs9-in.rs9uniors.com. The check is on the login page. The points you will be scored by, if the contest uses the public T20 card, are on the points page. The installer version you wrote down is the only version number this guide wants in an email.
After the installer closes
Uninstall, if you need to, is Settings, Apps, the app name the installer showed, Uninstall. That removes the installed package. It does not always delete the APK sitting in the browser's download list. A later tap on the old notification installs the copy you already decided against, even if https://www-game.com/api/download-url?from=rs9.world has since returned a different build. Delete the file from the notification or from Files after you uninstall, or after you cancel.
Chrome and Firefox keep separate Install unknown apps switches on Android 8 and later. Allowing Chrome does not allow Firefox. The switch you need is the one named for the browser that shows the file in its download list. Android 7 and earlier has the single Unknown sources switch under Settings, Security. Turn that switch off again in the same minute. A phone left on that switch will install the next file from any app without a fresh prompt.
The file name in the notification is the name to open. This page does not publish a fixed filename, because the response can set a different one. The byte size in that notification is the size of this copy. Write it down with the version from the installer if you later mail rs9support@email.com. Do not write 18.72 MB or v1.4.6. Those strings are withdrawn.
A file that arrives in a chat, or behind a configuration profile on iPhone, did not come from the button. The button on iPhone and iPad is routed to the contest and does not save a package. Safari's Add to Home Screen stores a bookmark of a URL. A bookmark has no permission list. The permission list exists only on the Android package installer, and the refuse lines are SMS, contacts, and accessibility, as written on the permission page.