I am having the same problem. In Safari, when I click on the Evernote Clipper icon on the top toolbar it asks me to sign in. I do using my Evernote user name and password as I have in the past. I dod not use the Google sign on despite having a gmail account. After clicking sign on the box disappears.
When I go to clip an article the colored process bar light up under the web address bar and disappears mid way. No pop up box appears as in the past. I tried to see if the clipped article might be showing up in either the Evernote app or in the online web version but nothing shows up.