Headphones not working with Soundcore Mini

So, I got a Soundcore Mini for Christmas, and I was happy to see that it had a headphone jack/AUX port. When I plug my headphones in though, no sound comes out. The sound only comes out once they are unplugged.

I only use Bluetooth speakers because my audio on my laptop doesn’t work and I like to work privately. So I don’t really want what I’m doing blasting throughout the house. Is there some way to get it working? It’s pretty annoying.

The jack is a INPUT, no OUTPUT.
If you plug the speaker to a working OUTPUT on a device you should get sound.
But not plugging your headphones on the INPUT of the speaker.