I posted three ideas, now I see only two listed for me under my ideas. Please help me recover my third idea.

The platform is divided in multiple universe, each universe is an Amplitude Game except Games2Gether which is about the platform.

You posted 2 ideas in the Endless Space 2 universe : https://www.games2gether.com/endless-space-2/ideas 

And another one in the Games2Gether universe : https://www.games2gether.com/games2gether/ideas 

Your idea is not gone, its just in the wrong section. You can see your content on your profile, here : https://www.games2gether.com/profile/myconv/contents/ideas .

You can reach the first two links by hovering your mouse pointer over the appropriate icon to the left, then clicking "ideas" in the fold-out menu. Alternately, you can click on the icon of the universe (Endless Space 2 or Games2Gether) to reach its main page, then click on Ideas in the top bar.

To access the list of your own ideas, click on your username at the top of the page, then click profile in the menu that appears. Once on your profile page, click Content and then Ideas in the top navigation bar.

Hello myconv,

I've moved your idea to the Endless Space 2 universe :)
Feel free to update it to change the categories (for the moment, I've put it under GUI category, but some others might be more appropriate).