How can I get my pre-header to show when it's not appearing despite being set up in the email?

[Natalie_Frost]

I have a pre-header set up on my email however when sending the test email, I am not seeing this and just the footer text is appearing after my subject line. Is there anything else I can do to fix this? #pre-header 

[SanfordWhiteman]

Can you unmark your own question as the correct answer? This is very confusing.