You can write to firstname.lastname@example.org to request for support from the developer directly.
You must provide the Order Number of your purchase when contacting email@example.com.
The Order Number can be found in the receipt email sent by Google Play .
Alternatively, you can use the Google account you use to purchase access to Premium features when contacting firstname.lastname@example.org.
Request for support are usually responded within 24 hours. Most requests are responded within a few hours.
Your request will not be prioritized if you do not provide the Order Number , or if you do not send the email using the Google account you use to purchase access to Premium features.