Smart Notifications are not working in SonarLint VSCODE Connected Mode

Hello together

I have configured my SonarLint VSCODE plugin with ConnectedMode. I am using the Developer Edition 7.7 and should get Smart Notifications as soon as the QualityGate fails. Unfortunately I don’t get Smart Notifications.

Does the VSCODE SonarLint plugin have this functionality at all, or is it possible that our firewall intercepts these notifications somewhere and does not let them through?