I mean to know more than the App interface tells, one needs to query with play-api utilities to get a raw response to step through/compare textually, see the aurora credits for projects that can do this or use gplayapi itself - README.md · master · Aurora OSS / GPlayApi · GitLab
Reading again the merge description, contrary to what I thought (“hinges on the google account”), ip country location seems to be a criteria. See their “test procedure” to clear app-lounge caches when changing network/ip.
In what country is ipinfo.io placing you when you test? maybe you should add this to the gitlab issue.
If your IP is shown as being a french network and the App is not listed, then it qualifies as bug.
btw - for me the tcl-e-ticket App is filtered at the DATA level (german ip) → not shown at all in the listing, while for you it was filtered at the UI level → shown, but with N/A button
the logic to decide all this is at getAppFilterLevel()