Side Bar navigation for Legacy web app


I was super happy to see a side navigation finally released, I added it to my legacy web app ( not Adalo 2.0) however when I tested the web app, it says something about component missing, I decided to fix it later.

Today I went, and I thought i ll delete it and start the side nav from scratch, I cant add it anymore, its not available in components.

No I didn’t dream it, it was there, available few days ago.
So Am I doing something wrong? or did Adalo remove it from being available for web apps built before 2.0? and if so will be available for us soon?