Why don't metrics and analytics count all visits?

Question

1C-Bitrix

Good afternoon.
Here's the problem. There is a store, a metric is installed, analytics, and another piwik is installed.
All systems do not count some visits. Those. let's say I have 81 orders according to the metric, and there are 115 of them in the CMS. 34 orders were not counted. I sinned on the metrics, put piwik - the same thing, and the most interesting thing is that CMS is Bitrix, there is a built-in analytics system, but it also does not see these visits.
Those. a person actually made an order, but we won’t see it in Bitrix analytics, not in metrics, not in piwik (Google is somehow crooked, but these visits are not there either).
I even did this: an order was received, we open the webvisor metric and look for such a visit. 100% it is not there, because at that time the pages where there was such a product were not opened, but in general they appear in the web browser.
That's where these visits go, why no system sees them. Is this a server? is there Apache + nginx, or something else?

Answer 1

Maybe people with uBlock, my visits will never be shown to anyone because I cut them, and I'm not the only one so smart.

Answer 2

Set better goals, it will be more reliable. When placing an order, an event for the target is triggered.
If you are using a standard component with AJAX work, then there may be a problem with it.

Answer 3

there are systems that analyze logs, but integration with analytics is usually self-written

Answer 4

These are blocker extensions and browsers like Opera where they are already natively built in.
People put them because webmasters have little built-in Bitrix analytics and they add GA, metrics and piwik to the site.
There is only one way to deal with this - to fasten your analytics and best of all on the server side, and cut out everything else.