"I'm watching" is giving me an "OOps! we can't find this page" message on my laptop. But it works in the App on my phone.
I've tried deleting cookies and logging back in but still the same. "I'm on" and "I started" work, though.
I'm using Chrome Version 99.0.4844.51 (Official Build) (x86_64)
on MacOS Monterey Version 12.1 (21C52)