a week ago - last edited a week ago
Internal Server Error - Read
The server encountered an internal error or misconfiguration and was unable to complete your request.
but just now got a redirect to https://access.clarivate.com/#/login?app=endnote&pageview=
so they must be setting up Clarivate specific domain?
but it resolved after login to http://www.myendnoteweb.com/EndNoteWeb.html
so maybe try again?