HTML on Wiki Module does not work

Hi, I think I may have done a very bad decision by using the Wiki module in Expression Engine as documentation platform.

I now on a position where I was asked to put videos with the help articles and to my surprise it seems this can’t be done. I enabled HTML on the Wiki module but when I try to paste a Vimeo video embed code it shows the HTML code instead of displaying the video.

Did I do a wrong decision but using the Wiki module for documentation? Is there any way to embed Vimeo videos or html code in articles?

We have too much information to make a change of platform now and I went with this module as its nicely integrated with EE vs a standalone wiki system. I totally knew it was basic but we just required it to display articles with images and links, nothing fancy. It seems the allow HTML code is not working for me, at least I cannot find how to display a video.

I would highly appreciate help on this.