I severed the tether to Evernote a long time ago for a few different reasons including security, privacy and the plain fact that the client was just getting too monolithic and slow.
I finally got around to contacting them last week to delete my account. Their support team sent me to https://help.evernote.com/hc/en-us/articles/208314088 which has everything you need to do.
The last two steps are a problem though. The second last step is to deactivate your account. The last step is to contact them and ask them to delete the account.
The problem is, is that the last step requires you to login with your account credentials you deactivated in the previous step.