Cubase is stop help please

Hello I want some help about cubase problem that I have.
I changed my computer Mac.
And I install the cubase 11 pro and I install serum by splice too.
But when I open the cubase there is no sound to come by sample or vsti.
Everything is fine but No meter is moving.
And I can’t input the key in the serum by mouse.
I had setup the studio setup and Audio connetion.
I can’t find the answer in this problem please help me.
thank you