I turned 45 at the beginning of the month, and have been trying to book online since the 45-49 eligibility was announced earlier this week. I tried multiple times but kept getting the not eligible message.
Gave up this morning and called the helpline. Turns out you have to have been 45 on the 30th March to be eligible?! It's really frustrating. I completely accept that the cutoff has to be drawn somewhere - I don't have a problem with that - but it's annoying that every single headline states that 45 year olds are now eligible and nowhere does it reference this cutoff (not even on the booking site).
Just thought I would share to save any other newly-turned 45 year olds a frustrating experience!