[Nopcommerce 3.70] Google Shopping - adult products - how add age group attribut?

Hi!
i have problem with google shopping. Google ban 40% my products and I need add adult attribut (we have gadgets to alcohol).

I have Nop 3.7. Use nopcommerce plugin Nop Google Shopping. And have there: plugins.feed.froogle.products.agegroup


1. I add to all restricted products in plugins.feed.froogle.products.agegroup: adult
2. Save.
3. Generate channel (here I have time out error, but similar i have when send mailing from nopcommerce, and all mails "go out").

But google still ban my products, and they told me there are no "adult attribution".

Maybe I should wrote there: plugins.feed.froogle.products.agegroup: adult [yes] or "adult=yes" or how i should fill this field to be correct?

Can't find on nopcommerce page any example how it's works, maybe someone can help me with this? how i should correct fill this field.

adult=yes
[adult=yes]
adult="yes"

or how?

I read documentation: http://docs.nopcommerce.com/display/en/Google+shopping but there is nothing what format should have attribut.

I also found it on google documentation. But don't know which format i should choose. It's XML.

Pliki danych w formacie tekstowym 
yes [tak]
 
Pliki danych w formacie XML <g:adult>tak</g:adult> 
Content API v2 (JSON) "adult": tak 
Content API v2 (XML) <adult>tak</adult> 

So I should add:
<g:adult>tak</g:adult>

No i only in age group field has written: adult

Don't know how I should use nopcommerce?

When i add in google shopping: <g:adult>tak</g:adult> have error and can't do this:(

No i see we have only "age Group" attribut... and we can't add ault yes or not? :(

Nopcommerce don't suport it? :(