MacOS Sonoma Wallpapers not downloading

Hi there! I've updated my Mac Mini M1 to Sonoma and when I try to download the new wallpapers, it seems like they take a lot of time, more than 20-30 minutes. While waiting, I noticed that for some reason it stopped the downloading process. Is there anything I can do about this? The Mac is up-to-date, I was on the beta version but not anymore and the device is not going to sleep while downloading the wallpaper.

Somehow, I have managed to download just 1 which took around an hour or so.

The home broadband is high-speed and I don't think there is an issue here.

Looking forward to your replies.

Thank you in advance!