When trying to add a single channel with a large amount of videos, random videos will start to timeout and get stuck in a download loop. Whether I am on a fast connection or a slow connection makes no difference.
I have made a screen capture that you can see here: https://youtu.be/Xk5PtNLKGNY
I also tried to force download some videos, and restart/pause and resume some of them, as well as all of them at one point, and the issue still happens.
And with the videos incomplete, I have no way to resume them successfully, but instead, I have to start downloading them all over again, only to experience the same thing.
I just paid for the program, and this is a huge problem, which makes me regret buying it.