I’m sorry to hear the frustration regarding the new ZML format.
To switch views, hammer time, I’m Toast, etc - these will be found on the main map tab. You’ll see the stop and u-turn button right above where it says Map and Dashboard, etc. You can actually slide that to the left, and you’ll see the other buttons revealed there.
The Zwift Mobile Link that runs on your phone or tablet that you can use to for selecting turns, messaging, giving Ride Ons and so on. It’s a companion app more or less.