Thanks for posting this. I'm having the exact same problem, and I'm really disappointed in how awful the app is. Even when I can open a Note, the formatting is terrible. And sometimes it locks up so I can't scroll. I have checkboxes in one of my notes. I'd like to think that I can tick those boxes in the watch app (I wouldn't know, since it won't stay running long enough), but I guess I shouldn't make that assumption. Because I already made the mistake of assuming that this app actually worked.
Sometimes I feel like I should pay money for an Evernote subscription, because I love it so much and depend on it almost daily. But when I see something like this it really disheartens me. I can't imagine how disgruntled I'd feel if I was a paid subscriber and this was something I was spending money on. Some of the apps I have on my watch are downright amazing. Hell, just being able to write words on the screen is cool, and works very well. In stark contrast, trying to use the Evernote app makes me feel like I've got some janky piece of ***** on my wrist that isn't really supported. I've seen what other devs have been able to do. Get it together, Evernote.