Simply so, why did Dragon Ball super get Cancelled?
Super wasn't cancelled, it finished. They ended the show so they can make movies and let the manga get ahead. Last we heard there will be a new DB show coming that will follow on from Super, that knowing Toei will retell Broly and whatever the next film is before moving on to the new stories in the manga.
One may also ask, why is DBZ Kai censored? The main examples are that they censor some of the more graphic injuries that characters sustain, such as how the hole that Piccolo's Makankosappo put through Goku and Raditz at the start was changed to look more like a burn or a bruise.
Herein, why was Mr Popo turn blue?
BIO. Blue Popo was a censorship idea done by the infamous 4Kids. In which any scene involving the 'racially insensitive' Mr. Popo would have the blackened character's skin changed to a noticeable blue.
Is Dragon Ball super coming back 2020?
So far, Toei hasn't made any official announcements, but many have speculated that Winter 2020 will mark Dragon Ball Super's return, two years after Dragon Ball Super: Broly premiered in Japan, although it may be more like Spring 2021 given how volatile things are in the world of animation as the world struggles to
