Hello friend, help has arrived
I have never seen such a mess in an avatar, and I don't know how you only pointed out the toggles xD
Avatar has:
VRChat SDK containing a mixture of old and new files creating multiple errors
Some of these errors could be causing Unity to not accept switching to Play mode
You also have a mix of outdated Poiyomi imports (but that's fine, for now)
Going into the toggle part:
The avatar is using VRChat’s sample menu and parameters, with no actual parameters or menus added, alongside the Robot Avatar FX controller (That’s probably why you have no toggles. There’s basically nothing there to begin with)
Also noticed that two animation bindings target the wrong location for the shorts.
The main problem here is that whoever put this together seems to have been fighting Unity at 3 AM, or was probably having a house party while working on it. It’s the perfect setup to leave someone inexperienced staring at it for ages, trying to figure out what connects to what. It's like trying to understand the Mona Lisa.
Give me some time and I can get it fixed for you