Same issue here; only sideloading the 2018 v 8.0 apk worked.
Even that was buggy - had to flip between data and wifi off, then tried several different log in options and something worked.
Luckily, was able to update afterwards.
Have Tweeted this thread and a shout-out to Evernote.
Hopefully there's a resolution for people less savvy.
Lots of free competition with similar offerings these days; hopefully they get on it quick, or they'll loose a lot of users.