Ok K.O.! has been cancelled and will not be renewed for later seasons.
This seems to be because of the lack of viewers, but this can be traced back to Cartoon Network itself with its flawed schedules and very little advertising for the show. 
Us fans adore the show and are devastated that it is ending. 
It is honestly a charming show and has helped me and many others with the strong values and lessons throughout the episodes.
Give Ok K.O.! the chance it needs and renew it for another season with a realistic time schedule & possibly merch so overseas viewers can support the show. 
A way to access the episodes online overseas would be a fantastic idea as viewers like me cannot access episodes & support them at the same time.