Ok, so 13 notebooks and 853 notes is not too much to worry anything about, so I'd personally suggest a Support Ticket (when you press "support ticket", in order to get a support ticket, its kinda tricky because it doesn't open right up to the "Support Ticket". It will open up to an "Evernote Support" page, so, in order to get a support ticket, you have to fill out these specifically: where it says "What can we help you with?", you press the box and press "My Account", then the next box says "Select a topic", you put in "unable to log in", and when you scroll down, it has some words, then there is :
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Then you press "Submit Ticket" , and submit a ticket) you can also contact Evernote Via. E-Mail if you are a subscriber. Or Via. Twitter at @everrnotehelps.
You can also contact staff in this Forum and DM them ( personal messaging ) : @Shane D. and @Nick L..