I did by same way: I logged in phone in the site Alby in browser, then in the Amethyst I long tapped and got a settings for zaps, there I clicked by Alby icon and got a page from "ngw" subdomain of Alby and there I created new Season (don't click advanced settings) and after I got Amethyst with all filled fields and pressed Save button.
Discussion
From phone, did you log in Alby with email or lightning?
With email
I would like to link my account with lightning but I cannot. The Alby has this functional only for new account :(
we have it there for any Alby account.
How can I link an existed account with lightning LNURL-auth? I tried many times but I cannot. I tried: Lightning Login and to be logging through LNURL -> then I see email field and I click by link "Login with email" then I filled existed email and password and I am inside after this. But after logout Alby's LNURL-auth from same wallet doesn't do log in (I begin from start as described here)
You need to import your Alby account in Zeus (by exporting the LNDhub credentials from the extension), then you can use Zeus to do LNURL auth and log into that same account.