It's because the "powers that be" moved it and Tron Uprising to an awful time slot where they knew no would see them to make the ratings go lower. They do this when out-house animation companies start doing better than the parent company originally predicted and when they aren't profiting from it they want to shut it down. It's happened too many times to be considered a mere coincidence. Here's the process:

1. The parent company predicts the out-house show won't do well.

2. The out-house show starts succeeding and gaining a wide fanbase to boot.

3. The parent company realizes that they can't profit from the out-house show's success so they plot ways to shut it down.

4. The parent company "decides" the out-house show isn't meeting rating standards even though it does and puts the out-house show on an unannounced hiatus even without the out-house company's notice.

5. When the out-house show does return it's either put in a terrible time slot where no one will watch it so the ratings can go down or given such little notice that people will still think it's on hiatus until it's too late.

6. The parent company has a big laugh and goes "I told you they didn't like it!" and shuts it down.

It sounds so unthinkably evil and unhanded but to quote the Muses from Hercules, "That's the gospel truth!" Disney's done it and Cartoon Network's done it.

would a webseries be possible? Independently produced, I mean

actually it did, its just that new highier ups just came on and did not understand the show, so they canceled it