Appreciating the options offered @gazumped. By "Try the 'lost password' process on the website to verify" do you mean Help and Learning articles? If so, I have tried everything to verify that correct account is used. Since my email address has not changed, I doubt this is the issue in my case. Password was changed, but that was on the same email address.
Will try reinstalling everything. But honestly - I have little hope and am close to giving up. Since Web version is also empty, I do not see how there can be app version issue on my MAC or iPhone.
If Evernote cares about their service and customers, they should take responsibility for such unacceptable bugs. I see little of that so far and refuse to give them any money until they prove the product is worth it. Excuse my ranting...