mohammad Have you made any significant changes to your site's set-up in the past 48 hours, that could relate to this issue? I've taken a look and I'm not seeing any issues with your DNS or SSL, which are the most common causes of these problems.
If there's nothing obvious coming from the question above, I would recommend reaching out to your host and following the steps listed in this article, as it's likely that IP blocking is responsible: https://support.ezoic.com/kb/article/how-to-fix-origin-errors
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