I tried using the Mega from the new archive. My issue is that when the download reaches 1 GB out of the 1,67 GB the site shuts down automatically. Perhaps cause The website is only interested in having people download that much..
Same with the other Mega - That is if you try to download them all at once (this includes using the "Download as ZIP" function when having selected only a few of the parts).
What worked for me was selecting a few of them and then instead of clicking "Download as ZIP" up in the right corner, I right-clicked --> Download --> Standard download
This should make you able to download them all (I did with 3 at a time)