Active Theme and Required Plugins. You go to Theme Options > Import Demo

After the demo data has been imported successfully.

You can go to Settings > Permalink Settings and save in here 

+ If you don’t import demo data successful. You can follow my guide: 

You need reset all using this plugin and then import demo data again:

You can try it

1/ if you install theme in localhost. You can go to php.ini and set

max_execution_time=5500

max_input_time=5600

memory_limit=1280M

post_max_size=256M

upload_max_filesize=756M

max_file_uploads=20

allow_url_fopen=On​​​​​​​

2/ set this in the config.php file

define(‘WP_MEMORY_LIMIT’, ‘500M’);

set_time_limit(800);