Bots gone from site for 1-2 hours

[bubliki]

Hi everyone,

From the beginning of March bots and crawlers begin to disappear from site completely for 1-2 hours and then come back again. It never happened earlier, they constantly crawled our site without stopping. We didn't make any changes on the site.

After that pages and images start to disappear from G index.

Does anyone have the same trouble?

[NakulGoyal]

Assuming you are talking about the website in your profile...here is what I would check: Do you have any content duplication between your multiple language subdomains ? Do you have XML Sitemaps for your pages ? Are they submitted via the Webmaster Console ? If yes, what %age of your pages do you see indexed vs how many you submitted ? Have you considered doing an Images XML Sitemap ?