Email support@singasong.app. You can also open a support email straight from Settings → Support in the app — it fills in most of the technical details for you.
To get an accurate answer first time, include:
- your user ID (Settings, in the app) or the email address you used at checkout;
- your platform — Android or web;
- your app version (Settings) and your device model;
- what you were trying to do, and what happened instead;
- for billing questions: the charge date, the amount, and which store or payment method it was billed to;
- a screenshot where it helps — it usually speeds up the review.