It seems the 'fan support' feature is not available on the Spotify website, only the native app. Explains why I haven't noticed it. So they finally added a way

It seems the 'fan support' feature is not available on the Spotify website, only the native app. Explains why I haven't noticed it. So they finally added a way to directly support artists. That's nice, but disappointing they excluded the web app from this feature. Its omission hurts potential donations. Spotify also lowers audio quality on the web app, gee it's almost like they don't want me to use the web app.