I am one of SteemWorld's faithful users using it from the United States. In Chrome, Brave, and MSIE (Edge) internet browsers the link to steemworld.org does not work (This site can't be reached) on my desktop and laptop through the Cox Communications ISP. However, I am able to reach steemworld.org on my Android phone's Chrome browser using the VerizonWireless network.
I took your advice to try the TOR browser on my desktop and laptop computers. Using the TOR browser I am able to access and use steemworld.org.
Thanks for the update and I hope my data point above helps you diagnose the issue.
Steem on,
Mike