Npm WARN Name must be lowercase

Hello there,

according to it should be possible to use User-Token that contain uppercase usernames, however I have not found this to be working

When trying to login i get the following:

Username: (33U7wmRv)
npm WARN Name must be lowercase
Username: (33U7wmRv) npm ERR! code E401
npm ERR! Unable to authenticate, need: BASIC realm=“Sonatype Nexus Repository Manager”

The KB article suggests you should modify your npmrc file, not use login.