Direct link

    Download the APK from the link on the ODIN website. You can use a direct link or scan the provided QR code.

    Open the APK. You might get a message saying that you cannot install an unknown app. If you do, click on Settings and toggle the switch to allow installation of unknown apps.
    You may also get a warning from PlayProtect; you should select "INSTALL ANYWAY".
    Install the APK.
    After installing of the apk, you will probably want to disable the installation of unknown apps. To do this, long press on Chrome (or the browser you used), and go to App Info. Afterwards, go to Advanced, and scroll down to see Install unknown apps section. Tap on it and toggle the switch off.

Once the app is installed, refer to  this guide⁠  for registration steps.