Disqus Comments disappeared

We been using the Disqus plugin on our WordPress web site for years (www.marliesplace.com). It was working fine yesterday, but this morning the Disqus Comments section has disappeared from all our web site’s pages. We do not think we made any changes that might have caused this. The Disqus plugin is still activated. We have been keeping up will all updates of the Disqus plugin. We are using WordPress 4.9.4 running the Twenty Twelve theme. We already sent a note to Disqus about an hour ago about this and have not heard back from them.

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