After having installed Lucy via “Advanced”, the link to the Lucy interface is taking the protocol (http/https) that you use for the gli-net interface where you open the link from.
But Lucy does not seem to accept a login via http, you can open the Lucy login page, but then it says “wrong password” when you are not in https.
I know you can´t influence the Lucy interface error messages, but you could hardcode “https://” into the link to Lucy at “advanced”.
Found out the reason:
Luci is writing a cookie from login named “sysauth”.
If you login with https, it writes this cookie with “isSecure”.
If you return to Luci later without https, login tries to overwrite the cookie, but it can´t as its only accessible by https.