I recently noticed the newer Part 3 and Part 4 volumes of Bookworm on OverDrive, so I was checking to see where I left off and the missing middle volumes hasn't changed.
I thought I'd ping in here that the corrections haven't happened yet. I'm satisfied so long as they're still planned to be looked into - they're quite worth the wait.
I'd also like to note that the "series" tagging on OverDrive is inconsistent -
If I search by creators: Miya Kazuki, You Shiina, or Quof they all seem to come up
example: https://www.overdrive.com/search?q=Miya Kazuki
If I search by series, there are several different tags that don't bring up all the books
ex:
Ascendance of a Bookworm
https://www.overdrive.com/series/ascendance-of-a-bookworm
brings up 4-1, 4-2; manga v6
Ascendance of a Bookworm, Part 1
1-3, manga 1-2, 1-3, 1-5
Ascendance of a Bookworm: Part 2
v1 and v3
Ascendance of a Bookworm: Part 2 [looks identical to prior]
v2
Ascendance of a Bookworm, Part 3
https://www.overdrive.com/series/ascendance-of-a-bookworm-part-3
v5
Somehow the main OverDrive site, as opposed to the specific one for my library, has different results on these series searches for some of them, so I just linked the ones with the odd behavior on there.
I can imagine that someone trying to follow the series through the OverDrive app exclusively may get quite confused trying to figure out where the rest of the books in the series are if they're not trying to search by author. I'm sure this has to do with OverDrive being a bother in the backend, but since it hasn't already been reported I thought it might help.
Thanks for all your hard work publishing these books!