Why can I not download unreal engine 4.25


I am having a problem with the Epic Launcher and trying to download the Unreal Engine 4.25. However all it does is says it this.

Not Installed
Unreal Engine 4.25.0

When I click the down arrow next to it. It says Unreal Engine 4.25.0 and when I click on it. Nothing happens.

What am I doing wrong to download Unreal Engine?

You have to click the install button: