Hi @KEVIN KORBAN !

On which device you have connection problem ?

Problems With Playing Music On Mobile

Reset your WiFi−

Signs that your mobile is not connected to the internet include:

• The Deezer app displays the "You're not connected to the internet" notification and/or a banner message reading "Deezer is offline"
• Nothing happens when you tap the Play button
• Tracks are greyed out

Before you do anything else, try resetting your mobile's WiFi:

1. Turn off the app
2. Turn off your WiFi
3. Wait for about two minutes
4. Restart your phone
5. Enable WiFi
6. Open the app

link

https://support.deezer.com/hc/en-gb/articles/115004368825-Problems-With-Playing-Music-On-Mobile

Problems With Playing Music On Web

Connection issues

If the Deezer web player says you have no internet connection, try these solutions below:

• Restart your browser: Try quitting your browser application and restarting. Then, return to Deezer
• Check for updates: Sometimes your browser may have missed an update. Try updating it to see if it makes a difference.

  Deezer is supported on the following browsers. Select a browser to see how to update it.

  Note: Only the latest two versions of each browser are supported

link

https://support.deezer.com/hc/en-gb/articles/115004370249-Problems-With-Playing-Music-On-Web