Hello @Nick L.
I've also mistakenly just deleted a part of one of my documents that I've been using for some time. I can't seem to recover it with my free plan. If it isn't too much of a hassle, would you also be able to upgrade me to the Evernote Premium plan so that I can recover the note content?
I'm not sure if you will be able to find my account email, but I can send it to you via private message if needed.
Thanks!