What’s the RSS link you got?
AFAIK, theere is no RSS link for saved posts. When I go to https://lemm.ee/u/Crul?view=Saved, the RSSHub Radar addon only shows this feed: https://lemm.ee/feeds/u/Crul.xml?sort=New
Note the sort=New
and the absence of anything regarding saved posts.
If I re-create the logical URL for the RSS feed of saved posts, I get a feed with my submitted posts: https://lemm.ee/feeds/u/Crul.xml?view=Saved
If I were wrong (please correct me if that’s the case), then you would probably need to provide your RSS reader with the credentials for your account… unless the saved posts are public for anyone to see, which sounds a bit weird.
You can open an issue on the repository and, if you have the skills, you can even implement it yourself :).
May I ask you if you know about any public (and free?) TTRSS instance?
Thanks!