Snapshot Pro Error: Manifest data not found in archive.

I followed these instructions to backup my site from my multisite, then tried to import that Snapshot to another multisite:

When downloading the Snapshot-zip from the original multisite, it shows that the file is 227.62M, but when I download it, it's only 2 bytes. In the .zip-file, there's only another .zip.cpgz-file...

Where's the problem? How to fix it?

Access granted btw. Thank you :slight_smile: