Here, though, the OP is using Adobe Fonts.

https://fonts.adobe.com/fonts/proxima-nova

> Licensing Information

> The full Adobe Fonts library is cleared for both personal and commercial use.

> As with everything from Adobe Fonts, you can use these fonts for: ... Website Publishing: Create a Web Project to add any font from our service to your website

Either Adobe has a license, and the foundry is fucking up, or Adobe doesn't have a license, and Adobe has fucked up. In neither case should this be OP's problem.