Question Regarding Config For Gnus With Fastmail

["Samuel Banya" <sbanya@fastmail.com>]

Hey there,

I wanted to do the deep dive to try out GNUS, but am encountering three weird things:
1. It prompts me for the 'IMAP' user, which I then put in as 'sbanya' since my email is 'sbanya@fastmail.com'.

Its weird since its defaulting to 'sam'.

2. When it prompts for the 'IMAP password', it shows me 'sbanya@fastmail' before prompting for the password, even though it probably should be 'sbanya@fastmail.com'.

3. Also, after I enter in the correct password and hit enter, I get the following message:
nnimap (fastmail) open error: 'NO Incorrect username or password.'. Continue? (y or n)

Here's my config for GNUS within my Emacs config:
** Add Gnus for personal email
#+begin_src emacs-lisp
  (when (member (system-name) '("notestation" "fossastation"))
    (setq
     user-full-name "Samuel Banya"
     user-mail-address "sbanya@fastmail.com"
     send-mail-function 'smtpmail-send-it
     smtpmail-smtp-server "smtp.fastmail.com"
     smtpmail-stream-type 'starttls
     smtpmail-smtp-service 587
     gnus-select-method
     '(nnimap "fastmail"
      (nnimap-address "imap.fastmail.com")
      (nnimap-server-port 993)
      (nnimap-stream ssl)
      (nnmail-expiry-wait immediate))))
#+end_src

Thanks,

Sam