I'd like to reduce battery consumption.

You can reduce battery consumption by adjusting graphic settings and frame rate in [Menu] (≡) > [Settings] in the upper right corner of the main screen.

I'd like to change the push notification settings.

You can adjust the push notification settings in the [Menu] (≡) > [Settings] in the upper-right corner of the main screen.

I don't receive a confirmation mail for my inquiry.

Please set your e-mail address to receive e-mail from the following e-mail address:

support@gremorygames.com

Afterwards, please re-send your inquiry through the customer center.