Pixel 9 Pro XL - London Underground WiFi

Hello,

I recently owned a Pixel 7 Pro, and had no issues connecting to Three-WiFi on the London Underground as per the FAQ online (i.e. set authentication mode to AKA).

I've recently switched phone to a Pixel 9 Pro XL, yet with the same settings it won't connect - stating an 'authentication issue'. This happens at every tube station.