I just enabled the only available feature previews as suggested above..... but am having a similar problem as Mutono: the form settings on commcarehq.org are different from the ones on the "form display conditions page" and the form condition tutorial video
Any tips on how I can create a form display condition?
Have you been able to turn on the add-on for Display Conditions as explained here?
You will need to go to the application settings page > Add-ons > then on the hamburger menu + dropdown button next to the Save button > select Calculations > then you should be able to enable Display Conditions