Google no longer allows web pages to be hosted in Google Drive as of August 31, 2016. This means published courses that you uploaded to Google Drive will stop working.
You'll need to move your Articulate courses to another web server or hosting service. Here are some free or low-cost options.
If you just need a quick way to test a course, Tempshare couldn't be easier. It's a free service provided by Articulate for testing published content online. As the name suggests, though, it's temporary. Uploaded files will be deleted after 10 days. For a more permanent solution, use one of the following options.
Amazon S3 offers free hosting with generous usage limits. If you go over the limit, you'll be charged a small fee. See this video tutorial by Tom Kuhlmann to learn more about Amazon S3.
Google Cloud has a free hosting service. You'll be charged a small fee if you go over the free limit. See this video tutorial by Tom Kuhlmann to learn more about Google Cloud.
Your Own Website
You usually have to pay an annual fee for your own domain name and hosting service, but it's a great way to establish your brand and distribute your published courses.
Here's a quick video demonstrating how to upload published courses to your own website. See this article for more information on using FTP clients to upload content to a server.