Mervin, this particular plugin relies heavily on google analytics itself by using  snippet code they provide. We ourselves don't have access to that snippet. So if google does any changes, we just use them automatically.

OxWall,

This is the message I get from Google Analytics.

Is there an upgrade of the Google Analytics plugin?

You need to change your tracking code, it has nothing to do with the software.

Google states that to enable Demographics and Interest Reports one needs to enable it in the Property Settings (whitch I have done) AND to add another line of code to the tracking code itself.

How to do that?

That means you need to add a line of code where  you inserted your tracking code.
I'm sorry I can't see the attachment, please make it in jpeg format.

One can not modify tracking code on Google Analytics website.

It needs to be done in the plugin itself.

Line:" ga('require', 'displayfeatures');" has to be added.

Any update on this?

Where did you insert this analytic tracking code on the website?

In the plugin form, where else?

I mean the script you provided on the screenshot: http://www.oxwall.org/...Google-Analytics.jpg Where did you insert it on the website?

I didn't.

I installed Google Analytics plug in and the only thing you can set up there is the tracking code itself. 

I can not add the line: " ga('require', 'displayfeatures');" myself.

In this case you don't use Google Analytics plugin
and insert the code you provided in the screenshot here: www.site.com/admin/settings/page
in the custom head code section.

Thank you