What I find a little strange though is last year the 120,000mark was reached in about 12 hours and then closed, this year its open for 5 days and only reaches 249,000
It makes perfect sense that leaving the ballot open five times as long will not lead to five times as many people entering. Last year, people knew that if they were planning to enter they had to get in as soon as possible. This year, everyone who wanted to enter could take their time. This seems more plausible to me than conspiracy theories about reference numbers.