The domain www.paramountplus.com is in all countries ..
.. if I click (with german ip) on VIP Services P+ the resulting url is:
www.paramountplus.com/de/account/signin/
so what do you mean?
> it always created the file names in English
Can't test without account (perhaps next trial..)
Is this the case with (rare) German titles?

Germania
I don't remember exactly, since it was a year or two ago.
I think Paramount+ doesn't correctly recognize that I'm from Germany via Streamfab.
But as I said, it was a long time ago. It's possible that the current Chrome browser in Streamfab is better...
Back then, the module's performance was on par with Joyn.
During the download, the German audio tracks were normally included in the file, but Streamfab took the episode title from the US language.