[/color] , Typo
Which directory did you extract the files into?
~/Library/Application Support/zeitcoin
Hmm,
Delete the blockchain files again, then start the zeitcoin wallet and open the folder ~/Library/Application Support/zeitcoin
Watch and see if when zeitcoin starts syncing if the file size for the blk0001.dat increases , if so that is the correct folder
If the blk0001.dat file size stays the same, then it is the wrong folder,
Post the results.
**UPDATE: After a little Research there appears to be a bug in the Apple OS.
https://forums.macrumors.com/threads/fat-maximum-file-size-shrunk-in-high-sierra.2074025/
In this bug, apple OS version macOS High Sierra (10.13)') does not copy a file over 2 Gig correctly.
blk0001.dat is over 2 gig so that may be the issue.
Try Extracting the rar file directly into the ~/Library/Application Support/zeitcoin folder
and if that also fails try using this alternate file manager
https://mac.eltima.com/file-manager.html
If neither of those work, you stuck having to sync from scratch and would need to write a script to restart the zeitcoin wallet every 4 hours until synced.
If you have access to a PC or a Mac not on that OS version try using one of those instead.