Devices below OS 6.0 and IOS 10 will not be supported in the future.

So, if you're using that version or less, it's hard to play anymore without Android or IOS being updated.
For stable gameplay, we recommend you to use it on OS 6 and iOS 12 or higher devices.

If not, could you send me an inquiry via 'Contact us' button?

And could you tell us your device name, OS / iOS version, and your app version?
(ex: iPhone 11, iOS 13.4.1, 21.1209.00)

For Android user, you can check OS version by following the steps below:
1. Access to Settings on the device.
2. Click 'System'.
3. Click 'About tablet' (it may differ).
4. There will be 'Android version' (example. 8.1.0).

For Apple user, you can check your iOS version by following the steps below:
1. Access to Settings on the device.
2. Click 'General'.
3. Click 'Software Update'.

Moreover, you can check the app version by following the steps below (Android user):
1. Access to Settings on the device.
2. Click 'Apps & notifications'.
3. Click on the app that you've inquired to us (ex. Bubble Pop) and tell us the version of it.

However, if you are an Apple user, you cannot check the current version.
Therefore, please access to the App Store and click on your account and update the app, that you've inquired to us, to the latest version. And then send us the message.