Meta is saying my custom audience size is not big enough – why is this and can I still use it or make an LLA?

Should there be a drop-off from Facebook clicks/conversions or my Music Link to Spotify streams?

Why not send listeners directly to Spotify?

Why not target all countries or at least all countries that Spotify is in?

What should I do if I am not getting streams but I am getting Facebook conversions?

What are good or bad Facebook Ad results?