So with the following setting, I get redirected back to writefreely and now get the message “User doesn’t exist.”
token_endpoint = /application/o/token/
inspect_endpoint = /application/o/userinfo/
auth_endpoint = /application/o/authorize/
scope = openid profile email
allow_disconnect = false
map_user_id = nickname
map_username = nickname
map_display_name = name
map_email = email