The "Indexed pages" information is scraped from Google by doing a "site:example.com" search. You can confirm the result by searching your website in Google with the same format by adding "site:" in front of your URL:

If you are not seeing your new website or the changes you made on a page in the search results mentioned above, it can be that Google has yet to crawl your website or the specific page. It can typically take Google from few days up to a month for websites, and even longer with websites that have a lot more pages.

If you haven't seen your website or changes appearing in Google, you can them to crawl or recrawl via the methods mentioned on this page here: https://developers.google.com/search/docs/advanced/crawling/ask-google-to-recrawl

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