What I did :

• 1.0 beta 2 installed
• Paired mode, every content type/template checked, rest is not

When I visit an AMP page via the admin menu or direct link I get directed to /?amp then /?amp-validation-errors-xx and this redirects me to / which means I cannot reach the AMP page.

If I activate the Automatically accept sanitization for any AMP validation error that is encountered. option then the ?amp will work, and not redirect me to /.

No logs regarding this problem appear in my debug.log so I cannot help much more.