Mega download links are behaving strange

I have the problem, that, if i try to download something from mega upload (as a zip file) often the file is broken. I use the google chrome mega upload extension. How can that be? As far as i know The files on the mega download server are not in a zip-file, so mega download creates the zip-file which i then try to download for me, but as i said, they are often broken. When i try to open the zip-file some parts are missing…see the picture. …there are 7 folders…they exist, they are on megadownload, otherwise, how could megadownload show them to me? So they are there, but when i click on „download as a zip-file“ it can be that the zip-file contains not all 7 folders…a few may be missing…or a few files in the folders may be missing. When i try to download the same again, maybe now something else is missing now. So sometimes i need to download the same file 10x until everything is there. How could i solve the problem? Thanks