A. If the save/export button is not working, first ensure that you have enough storage space on your device. Go to Settings > Storage to check available space. If space is low, delete unnecessary files or apps. After ensuring sufficient space, restart the app and try again.

B. If the button is still unresponsive, try saving your project in a different format or resolution. Look for any options in the app settings that allow you to change the export settings and attempt to save again.