How to get Ember Twiddle working: Route links are not displaying on the page

This question is related to: Ember Octane How to Clear Form Errors?

I have been asking a lot of questions on how to upgrade my Ember Classic project to Ember Octane. Some users in the community have suggested that I post an Ember-Twiddle for them to see what is going on. I have tried doing that, but I cannot get it to work. This is another tool for me to learn and I am struggling a bit to make heads or tails of it while trying to also NOT post my entire project as that seems unnecessary.

Why do I not see the page links for change-password and myroute2?

https://ember-twiddle.com/364eaf05a2e1072994b61f255032eb62?openFiles=templates.application%5C.hbs%2C