We are losing data on referral visitors, and we cannot identify what's wrong. Within a certain period, there were 3000 clicks on a banner on our partner's site. (according to data from our partner)
Our analtytic shows only 300 referral visits from that banner. We can't understand, where are the rest of visits.
I read that some of these referral visits can show up as direct traffic. But we only had 1500 direct visitors within that same period. Therefore, some visitors are still not tracked! Maybe there's something wrong with our tracking code? It is up to date and it is placed within the head tag....