For the users of a free version the support is only provided in the forum. Please do not send the questions by e-mail.
For the premium users the support is also provided in the forum, but you can also use the e-mail email@example.com. Please send the support inquires from the same e-mail which you used to purchase the application, and indicate which App Store you used to purchase the application (Google, Amazon, etc). If you cannot use that e-mail, please include the name on the account you used for the purchase as well as the date of purchase into your request.
There is no phone support for the application, so please no phone calls.