Randy Calvert

If you’re referring to the number of crawled pages, this is intentional. 
There are pages that IPS is flagging in the HTML code for the search engines not to follow such as profile pages and some of the various pages with query strings that don’t effect the content itself for static (bot) users. 

This means Google spends less time on the “crap” parts of your site that are not REAL content and instead has more crawl budget for the “good” stuff. 

Your robots.txt looks good based on the path you described. Your URLs should start with the slash as it is a call to a sub folder. 

I’ve noticed in my own crawls much fewer TOTAL pages but much more good pages. I had been blocking a lot of stuff in robots.txt and Google would have like 50k items it noted were blocked or another 30k items that were crawled but not indexed. Those numbers are almost to zero now. In fact about 100k total “worthless” items are no longer crawled. 

When entering your key, did you add -TESTINSTALL at the end of the license number?
See the following for details:
 

Have you cleared your system cache?  From your ACP, go to Support and then click on "Clear system caches".  

If you have an older version installed, IPS is not going to FORCE you to upgrade. They may not be able to provide support if you’re not running the latest version, but as long as things are just working they don’t require it. 

With that said, they don’t provide old random versions to download and install. So you would not be able to download 4.2.x or 4.4.x and install it simply because you want to run an older version. (You would not want to anyway due to several security fixes that are included in subsequent releases.)

Inside of your conf_global.php will be: 
'base_url' => 'https://www.site.ru/',
Change this to:
'base_url' => 'https://site.ru/',
Basically just remove the www reference.  🙂

My guess is you’re running into an issue with content security policies which prevents your site from being embedded into third party sites  
Search the admin CP for:
Allow community to be embedded in an iframe
You might need to change from the default X-Frames-Options which allows content to be linked from just your domain to a custom Content Security Policy. 

You can Google how to generate a custom CSP header that you can paste into that section when you choose the option.