Our website got some abnormal ranking issue at Google. If our ranking is improved at one country, it's getting dropped in another country and vice-versa for our main keyword. And these 2 countries are our primary market places. It's not temporary or accidental. It's been happening for years and I really wonder what might be the reason behind this. I don't think Google is intentionally doing this. Something from G Algo has triggered to happen this and I feel back-links may be contributing here. Please share your views to get me out of this.