articles appear in the wrong order
The Kobo reader shows the articles in some time-related order. It may be alphabetical order, modification time or access time, unclear.
Because we download files in parallel, the file creation dates are not
ordered. (Arguably, even if they were, they would technically be
incorrect as well.) We therefore have tried to set the file modification and access
to the the article modification date. Unfortunately, it seems that the
Kobo application promptly ignores that completely and bases its own
internal timestamp on the discovery date.
This may require hacking into the SQLite database to fix the dates. Not sure it's worth it at all.