Ikea Storjorm mirror cabinet lighting is not working

I installed a Storjorm mirror cabinet at my daughter's place yesterday. After connecting the transformer to the power supply and connecting the two LED light strip connectors on the transformer output side, unfortunately, they do not light up. The power supply is live. I did not insert the light strips further into the door wings because there might be a defect there. I aborted a phone call to Ikea after half an hour of waiting on hold. Can someone help me?

Thank you in advance.
GeKa

Hello, I wouldn't know what could go wrong there. Take the transformer and lights to IKEA and exchange them.