Also, if you could provide any information on how you’re viewing the episodes (browser, operating system), that might be useful. Like, I’m using Firefox v. 100.0.2 on Windows 10.
And I’m also wondering, if you’re viewing these on a web browser, are you using any add-ons that might be interfering with your ability to access/display captions?
As for the Vault Picks, those don’t appear to have captions available (at least, in their Vault Picks form), and @Ivan is aware of the issue:
(EDIT: what @imdwalrus said)