Same thing happens here in Utah. Last year I puchased a left over buck tag for one of my boys and before I could get the second son one they were sold out. My brother in law was at the division tinking that was the fastest or best way to recieve a tag and stated that out of three stations with division personal two people recieved tags, but before the third division employee could finish up and hit purchase the tags were gone for the third person.
Everyone behind them were left out including the third person that was being helped at 8:00 AM, but failed to get a tag before quicker people at home on the internet purchased the tags first.