See also Contact Form 7 Email Issues which covers this issue. Most people that work through this information appear to be able to resolve their email sending & receiving issues.
I’m sorry if this is a very basic question, but what email is contact form 7 attempting to send the email to. Perhaps, I need to see if that is set up correctly.
I have resolved for myself the last question regarding which email address is being sent the contact information.
I’m still working on why I am not receiving the contact email. I had my host provider try and it worked for technician. I tried 3 different email addresses and it has not yet worked for me yet. Still researching.