@Ivan Mishchenko

The only positions there are:

Enable CSRF token in forms

CSRF token lifetime in seconds(0 - do not track time)

reCAPTCHA public key

reCAPTCHA private key

Add "nofollow" attribute for external links

Block content after N reports (0 - do not block)

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I did install a new robots.txt file which had this content

User-agent:*
Allow: /

That seems to work