Not able to merge multiple audio tracks into one

So am currently trying merge all these tracks from a CD I just got into one. Watched a couple youtube videos, and I am not able to click on the option that completes my task. Can anyone tell me why?

One way is to select track 2 with the SELECT button on the left and then use the time shift tool (two sideways black arrows) to push track 2 so its beginning lines up with track 1 end. The tracks will get sticky when you get close. Repeat with all the tracks.

Screen Shot 2019-06-18 at 20.08.52.png
When you File > Export the show, Audacity will jam all the tracks into one continuous piece.


Or use Tracks > Align Tracks > Align End to End and then Export.