Midi notes not making sounds in Logic Pro x

On my iMac 27", when I press a note in the midi area, I get no sound and I don't know how to fix the problem.

I am using Universal Audio Apollo Twin Thunderbolt. But the UA Console is not showing up either ! I sent an email to them to find out if I updated the Console, I thought I did, But I don't understand why the update is not showing when I click on Console , Not sure if the two are related !

Thanks for any help

Bill