Cubase11 Windows10 no sound on Cubase10.5 project

I am taking a Cubase production class at Berklee and the first assignment is to mix a set of tracks. The lesson project is from Cubase10.5 Pro but I have Cubase 11 Pro. I am not able to hear any sound. I am able to see that sound is playing in the project window. I have set up the audio connections output and input for my Focusrite, I can here sound on other projects but just nothing from the lesson project.
Any suggestions?

Hi,

Can you see the meters in the MixConsole? Can you see the meters on the Stereo Out? Is the Stereo Out tired to yours main speakers?