If your line is an xtream codes line. (it has get.php in the url). Then I try and download series using the type=simple.
You can check if you get a response from this url call in a browser.
xtream line example
h t t p://domain.xyz/get.php?username=user&password=pass&type=m3u_plus&output=ts
type = simple example
h t t p://domain.xyz/get.php?username=user&password=pass&type=simple&output=ts
Not all providers have that call. But proper xtream lines should.
If your playlist is not xtream line. Then it could end up in vod or even Not Categorised folder.