Same here. I mentioned it to Amb support a couple of weeks ago and they raised a ticket about it with IT.

But it's still not working on the website (rolleyes) so I downloaded the app as they wouldn't extend the FNA past 31 Dec.

I don't like downloading third party apps (yes I'm a security Luddite) but the FNA looked likely to go to waste otherwise. Booked now thanks to here, Ludditeism restored. Phew