I played in the very beginning of Ingress and successfully submitted tons of portals in my area. I recently came back to it (Dec 2015) and noticed the Seer medal, but that I only had 1 portal counted towards it. When I go back to portals I know I submitted, the portal information says "Portal information unavailable". Did I just simply not get credit for these because they weren't tracking yet or is there some error which can be corrected on the Niantic side?
I don't have an authoritative source for this, but I am pretty sure that this is because the early portal submission mechanism was via email. So there was no reliable way to tell which player submitted a given portal since they didn't necessarily use an email address tied to their Ingress account (and Ingress may not have tried to use that connection even when it was present).