Why can't I hear anything even though I’m logged into the online seminar? 25 June 2021 12:49 Updated Kindly check whether the speakers on your PC / Mac are switched on or whether you may need to plug in headphones. Related articles Why is the picture / sound suddenly gone during the online seminar? What are the technical requirements for participating in an online seminar? Why haven't I received a confirmation of my registration for the online seminar? Where can I enter my benefit number / promotion code? Can I take part in the online seminar using a mobile device (tablet, smartphone)?