If you have a bug with the app and you want to report it, from the Settings tab, you can click on the red bar (as displayed below). It will open an email where you can describe your issue.
To give us all the information we need to help you, we ask you to answer to all 3 questions.
Please note that the logs of the app are attached to the email. Please do not remove that file from your mail when you send it to us, as it might be very helpful to us to investigate the issue!