I see that it only goes up to issue 4 on here, but it’s a 6-issue series. Hasn’t enough time passed since the issues were published?
There’s a 6 month delay between sale date and DCUI release. Batman ‘89 #5 came out on April 12th. So it should be on here in October.
There were a few delays with the series, so with there being a six month delay, it affects the release of the books too.