Mac + Serviio + VLC - Folder Problems with Live Streams

Dear community,
I just installed serviio and read through plenty of posts here in this forum. So far I made it work that I can watch movie files on my Samsung TV and also on my MacBook, but with LiveStreams I do have some issues.
I installed the necessary plugins (LiveFeed.groovy), the macbook and the TV is getting recognized by the server without issues. But when I try (either with VLC or the TV) to access the Folders of the RSS Feeds?! which I added, I only see the subfolders and SOME channels, e.g. in the International News subcategory I only have 3 channels, after trying forth and back I had 5, now 3 again. In the HD Movies or HD Channels subcategory (downloaded from the Forum here) I only had one single channel (Home & Garden HD), but nothing else. I already tried the search here but can't find any relevant topics?
COuld someone help me and tell me what I´m doing wrong?
I also added the German "ARD Mediathek" as RSS which doesn't show up at all - not even as folder.
I just installed serviio and read through plenty of posts here in this forum. So far I made it work that I can watch movie files on my Samsung TV and also on my MacBook, but with LiveStreams I do have some issues.
I installed the necessary plugins (LiveFeed.groovy), the macbook and the TV is getting recognized by the server without issues. But when I try (either with VLC or the TV) to access the Folders of the RSS Feeds?! which I added, I only see the subfolders and SOME channels, e.g. in the International News subcategory I only have 3 channels, after trying forth and back I had 5, now 3 again. In the HD Movies or HD Channels subcategory (downloaded from the Forum here) I only had one single channel (Home & Garden HD), but nothing else. I already tried the search here but can't find any relevant topics?
COuld someone help me and tell me what I´m doing wrong?
I also added the German "ARD Mediathek" as RSS which doesn't show up at all - not even as folder.