Your login is the email you used if you have previously purchased anything from us or if you have used our app. Try signing up again with your email to know if you have used that email before.
If your email address already exist and you need to reset your password, just click the "reset your password" button on the login section of the app and then follow the instructions you will receive by email to complete the process.
Alternatively, you should be able to reset your password here.
If you still have issues please get in touch by submitting a support ticket.