I’m having the EXACT same issues. When it started it was instant annoyed total recall of what happened last year.
Ive tried doing everything like Maxine has, deleting freeview, checking if it’s up to date, leaving the tv etc all turned off. It’s not my broadband and it’s also again, not affecting the TVNZ stand alone app which I’ve just tried and it works.
Unfortunately for me I have a lot of shows on bravo that I was in the middle of, and I relied on freeview to watch these so I didn’t record them, seems a stupid mistake on my part as it seems obvious we can’t really rely on the freeview app to work at all. Maybe you should just start a YouTube channel ?
I hope you can fix this latest bug again (for now anyways) it only started about 4 or 5 days ago.