Q: I have purchased the pro upgrade, but the app is still locked.
A: Delete the app data & cache for the Play Store. To do this, go to Settings > Apps > Google Play Store > Storage > Clear Data. Restart the device, and with active network connection, open the Play Store app, then open the menu (top left button with 3 horizontal bars). Select the account used to purchase the upgrade, then click “My apps & games” > “Installed” > scroll down to WaveEditor > “Open”.
Q: Do you have to buy each effect separately?
A: No, once you purchase the pro upgrade, everything is unlocked.
Q: Why can I not save audio files to the SD card?
A: Just one of Android’s most useful features. 3rd party apps, or apps that did not come with the phone do not have permission to write to SD cards/USB drives, even if you have granted the app storage permission. The only exceptions are, being able to save to the app directory under the /Android/data directory, and by using the system’s file chooser. The latter is not friendly when using native libraries.
Q: I don’t understand how to use this app, is there a user manual available?
A: Unfortunately not, but hopefully soon.