The latest update of Chrome (version 80.0) now blocks mixed content, which causes the player to fail loading audio on a https page.
Here the official Google statement: "In Chrome 80, mixed audio and video resources will be autoupgraded to https://, and Chrome will block them by default if they fail to load over https://. Chrome 80 will be released to early release channels in January 2020. Users can unblock affected audio and video resources with the setting described above."
No worries, we have you covered, you can use our free https proxy. To do so, simply go to the console, and navigate to Listen > Player and enable the https option. For more details: https://help.cloudrad.io/s/article/player-https-proxy
This option is even available for our customers using our free player without hosting their radio with us. Note that it's provided on a best effort basis and that we might restrict its usage at any time.