cannot import demo

I have tried repeatedly to import the Simple Blog demo for my Highend theme. I have talked to the help desk at my host (Bluehost) and WP Live (WP help desk) to no avail. I finally read a post on this forum I thought might help which said to increase the limits on the php.ini file, add a small change the wp-config.php file and deactivate all plugins but this also did not help.

My current php.ini file limits are:
allow_url_fopen = On
allow_url_include = Off
display_errors = Off
enable_dl = Off
file_uploads = On
max_execution_time = 400
max_input_time = 60
max_input_vars = 3000
memory_limit = 256M
session.gc_maxlifetime = 1440
session.save_path = “/var/cpanel/php/sessions/ea-php70”
upload_max_filesize = 64M

and for the changes in wp-config.php, just before the “Happy Blogging” line:
define( ‘WP_MEMORY_LIMIT’, ‘256M’ );
set_time_limit(400);

If you have any other suggestions or you would like to help me by importing the demo, please let me know.
Thank you