You are welcome. Others have posted that even though their device/computer is trusted, it still required a code. What I posted above is the way it should work, but based on discussions I have read, that doesn't always happen.
For the emails, this is also an occasional problem for some people. Are the emails at iCloud.com/Mail using a computer browser? Have you tried quitting Mail to see if the emails will download after opening Mail again?
If you want to contact Support, try Apple Support.
Apple Support Contact.
Work through the screens to get an email or chat option.
Apple Support by e-mail or chat.