We are a small team who don't have the resources to test every single OS version on every device. Problems will happen.
As such we're happy to issue you a refund, and you can keep the device. All we ask is that you let us update the app to make sure it's working on your device, and hopefully others.
Thank you for helping us find the issue. We will work tirelessly until it is fixed. If at some stage you are satisfied we would be delighted to turn your one star review into a five star one.
Kind regards Company which needs a little bit of help in how to deal with customers