There are a few things that may be prohibiting the update on your device. You can try a couple of things in sequence to try and solve the issue.

• Fully restart your device. Access HiiKER on Play store and try updating again.
• Check for any software updates on your device, before trying the update again.
• Clear the app cache and try updating again.
• Check your internal device storage isn’t full.
• Check network connections.

Failing all of this, your device may not support the minimum Android Operating system needed to run the latest version of the app. You can check this by going to your device settings and checking About phone/device > Android version. If your Android version is 7 or lower and your device cannot update to a higher OS version, you may not be able to use the latest version of the app.