Request for alternative payment methods for Symfonium

Feature description

Add alternative payment methods that do not require Google Play Billing, such as direct license purchase (APK/key-based activation) or other independent payment options.

Problem solved

Users in regions where Google Play Billing and common payment services (including PayPal and similar platforms) are unavailable cannot purchase or unlock the full version of the app.

Brought benefits

Allows users without access to Google Play payments to legally purchase the app, supports wider accessibility, and enables more users to financially support development.

Device type

Phone

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