I think you need to forget about the reviews imported from AE ! you can use them to know more about which countries to target on campaigns but i don't see how else they will bother you, FB insights contains info about the traffic you brought to your page & that you are targeting, this is where you have to focus !
Thanks for your persistent feedback. You said "you can use them to know more about which countries to target on campaigns.." So that's what the issue is. If I use the data from the review to target the countries during my ad campaign creation, it will apparently conflict with the data suggested in the audience insight. In short, the audience suggested by the insight will not really match those in the review, in that the top countries that can buy the products will be different.
Here I'm not referring to the insight that contains info about traffic I brought to my page, rather the general info available for people engaged in certain interests. And the bad thing about ad campaigns with smaller budget is, I cannot target multiple countries considering how the campaigns operate. I will hardly get any audience to view my ads. I will need to narrow my demographics, by cities in a country or two and not even the whole country.
Check the screenshots attached. You can see I specified age group from 18-44 in the insights for women only with interest in accessories such as jewelry, handbags, purses, cosmetics and those into online shopping. I have left the country to All so it collects data from all nations. And as you see, the top countries selected are brazil, USA, indonesia, India and a few more. But if you see the reviews from my store for similar products such as jewelry and cosmetics, you will realise very few comments from brazil and USA while most come from Russia or those with red/white/blue flags and a few other nations who are ranked low in the Facebook insights.
I can use the review section to target the country in my ads, but then as per facebook's insight, the audience from these countries rank very low for the interest specified...and I may not be able to drive them to my ad at all.