Apparently you can only go via Google or Facebook OAuth but I just want to use my regular email address. The sign-in options list email address as a possibility so it was doable at one point ...
See here: <a href="https://help.medium.com/hc/en-us/articles/115004915268" rel="nofollow">https://help.medium.com/hc/en-us/articles/115004915268</a><p>It's possible, but sorta hidden.