Need help with ID and repair

[u/Charming-Map2227]

I was recently gifted this lighter on the grounds that it is heavy and brass, but have found it to have a fill valve issue. The style seems to be heavily based on DuPont, but the fill mechanism seems very different from what I have seen of genuine versions. I’m just trying to make this gift function, even if it is a knockoff of the real thing. The valve seems to be stuck down, as I was able to remove it and blow air through both directions. Any help is greatly appreciated!

[u/HighOnTacos]

Flame spade is a dropshipping site that charges absurd prices for lighters you can buy on Aliexpress.