The other 4 were downloaded at 540 and did not have their SRT files.
AGuyWithAComputer
Since users can't fix the 540p issue,
("new videos" apparently refers to all series that are still getting episodes)
I only tested Dexter Resurrection.s01e04 with (en) subs (in the USA)
and I can confirm that I get no (extract to) srt subtitles.
[code][Info]: [DownloadCBS]" "subtitle stream empty, langCode :eng, path : .. Temp/outputTemp/Paramount+/ .. /Period_00/Sub_00/st_00.srt, exists :0, size :0[/code]
If I use the manifest.mpd url from StreamFab.log I see that the subtitle exist:

see workaround to get srt subs
here