UA was supposed to release on Blu-ray, but was cancelled. Now none of the shows are even announced. Hopefully OS's HD remaster gets a Blu-ray release, as well as AF, UA, and OV.
The first three shows are on Netflix, but only in America and a handful of other countries. I'm Canadian and it's not even on Netflix Kids. I have requested all five shows (yes, even the reboot, because I personally found it to be okay), but they haven't responded in a long time.
So my streaming options are limited to YouTube and CN's website, huh? Well, the main problem is that they only have clips, not full episodes. What a shame. I really wanted to watch the shows in HD. It's available on Netflix according to isitonnetflix. My friends say to stream it on [redacted} but that's tantamount to piracy, so not going there.