I'm a September year ender and this is what I have (I earned about 800TPs since 1 April) so definitely an IT glitch...
I will be up to over 1500TPs in November, and I'd expect the card expiry to move to April 2026 then. Bit annoying it only buys me 6 more months at gold, but it does at least remove the uncertainty about how long I'd have for a soft landing... worst case I'll have lounge access till April 2027...