Plugin does not work.

There is something on your server that is adding HTML to the JavaScript file for some reason… if you look here:

https://blog.mboveiri.ir/wp-content/plugins/better-analytics/js/loader.php?ver=1.0.8.js

This part at the end is not part of the included JavaScript, but something else is adding HTML to the file:

<div style="text-align: center;"><div style="position:relative; top:0; margin-right:auto;margin-left:auto; z-index:99999">
</div></div>

Whatever it is, seems to be adding it to all pages of your site, even error pages. For example if you look at the source of this, it’s there too: https://blog.mboveiri.ir/somerandomurl

Appears related to free hosting provider.

See: https://forums.digitalpoint.com/threads/plugin-dos-not-work.2759716/