Tracking code not installed

Hi,

I’m using your plugin on my website http://www.miejskieprzygody.pl/ since over a year and all worked fine.
A week ago GA stopped showing traffic. On GA account/tracking information/tracking code status showed was: “tracking code not installed”
I reinstalled and reauthorized the plugin but the updated tracking code status is still: “tracking code not installed”

On my other webiste http://joyfulcareer.eu/ configurated on the same server and the same GA account all works fine without troubles.

Any ideas what can be the problem?

Thanks,
A.

https://wordpress.org/plugins/google-analytics-dashboard-for-wp/