Question about Lenovo IdeaPad Flex 5

Help - external monitor does not work with Lenovo Ideapad Flex 5 I have attached the LMP Mini with USB-C to my new Lenovo Ideapad Flex 5 and would like to use an external monitor with it. This is plugged into the LMP Mini with HDMI. Unfortunately, the monitor shows "no signal". However, if I plug the HDMI directly into the notebook, it works without any problems. What could be the reason for this? Does the LMP Mini somehow not support the HDMI connection from the monitor to the USB-C of the notebook? Do I have to change anything in the settings on the notebook? I am already looking forward to your help because I would like to use the LMP Mini very much so that I only have to connect one cable at a time. Kind regards =)