Set your computer as the audio output device on your mobile application.

Hi ​@eim !

You can't put your computer as the audio output device for the mobile Deezer app because the old "Deezer Connect" feature, which allowed this, has been discontinued.

You can play Deezer from your Android phone to your PC via Bluetooth by pairing the devices and using your PC as the audio output (computer's speakers) for your phone. This requires enabling Bluetooth on both the PC and phone, pairing them, and for Windows 10 and later, you may need the Bluetooth Audio Receiver app from the Microsoft Store to make the PC function as a Bluetooth audio sink .

Or you can use the Deezer web player : Go to the Deezer website in a web browser on your computer and log in to your Deezer account. You can then play music directly on your computer without using your phone.
You can also download the Deezer app for desktop which is similar to Deezer web.