Demo page doesn't appear to have CSS or any styling

Hi, after I activated Sydney Pro ii on Wordpress and then imported the XML demo content file, I could see the demo front page with the content but all in black and white background with no CSS or JS or any sort of slyling, just the text, not sure what to do here if someone could assist me would be great. Thanks!

Hello there,

Your site might be missing the main theme’s style.css file. Please try re-installing the fresh Sydney theme; then reload your site. If this doesn’t help resolving the problem, please share the link to your site to help me inspect what might be the issue.

Regards,
Kharis