I updated the version of my k2 to the new 2.6.8, and after that Youtube it'is not appearing in the video provider list anymore.
I tried fixed, but was unsuccessfully, i searched in here and couldn't find any topic with the issue.

Here are a screenshot (i.imgur.com/pEuIEVj.jpg).

I was using the 3.3, after I updated it fixed.
But now there is a new issue, the tags that should be like this {youtube} {/youtube} it's showing like this {YouTube} {/YouTube} and the video it is not loading. This is happen in the front and back end.
Here is a example. eldorado790.com.br/variedades/videos/item/7121-caminhoneiros-fazem-exame-na-br-060

I have the same problem as Gabriel. Im also using the latest version.

Link to article: adventuregames.hu/tesztek/moebius-teszt.html

It's perfect, thank you so much.