Page caching using plugins is a good concept to speed up a WordPress website. If a URL is reviewed at, https://pagespeed.web.dev/ then diagnostics section provides ample...

Correctly configured primarily means, it should not block pages to be crawled by search engines.

how correctly configured firewall , is any steps

If your blog post shows a 404 error in Google's cache after being crawled, it could be due to temporary server issues, an incorrect URL, blocking by robots.txt or meta ta...

Do you have some results?

Correctly configured firewall doesn't affect SEO or rankings.

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If possible, please provide the URL of the blog.

You can appeal for the wrong decision made. Check here, https://support.google.com/legal-help-center/answer/13965229?hl=en

While it is a positive thing to have low spam score, it has nothing to do (directly) with your ranking positions. So I wouldn't be looking for a relationship there. Also,...