Air New Zealand Air Points - can't reserve seat online

Hi everyone. Apologies if this is somewhere else. Have searched thread but cannot find answer. I am a newbie to ANZ, having defected from UA on the LHR to LAX route. Question is I have just made two bookings in Business Premier but when I try to book seats get message this service is unavailable. It is more than 24 hours, so I am doubtful that website is down, but that is possible over weekend perhaps. I have tried different browsers, but same result. I am using a Mac, but I can't believe that ANZ doesn't have lots of Mac users as passengers? Any ideas? Thanks.

I've had this issue a couple of times.
Solution was to call them and request a seat.

As kiwind says, call the call center.

I have this problem with NZ with tickets issued by travel agencies or other airlines.

I was able to reserve NZ seats a few weeks ago on my UA *A award ... today online reserve seat of the same reservation no longer works.

Online seat reserve working for me now ...