Please make sure first to have the latest theme version installed! Then to have enough memory allocated to WordPress. Deactivate every third party plugin you may have installed previously and try again.
If you you still have issues, send us some valid wp and ftp credentials in a private reply (or add them to your profile data).
Read this article for more information.
You do have all pages imported. Just import the header you want in Codeless > Header Wizard, same for Footer Wizard to complete the setup.
Let us know if you have any questions.
