Those “planks” don’t have the right proportions for laminate flooring. It kind of looks like tile.

There’s no give or flexibility to these. I’d say tile of some sort. Here are the sides and bottom:

I just saw the other pictures of what it looks like under the tiles. That’s a proper mess. You can probably temporarily fix that, but it doesn’t look like it was properly installed at all. Unfortunately fixing it correctly will most likely involve redoing the entire room.

It’s a bitter pill to swallow.