As of right now, because the service's no longer exist with USPS, they don't show up on the consumer side (checkout pages) of the website. If I knew more than basic code, or how USPS handles their coding, I'd just go in and make whatever changes need to occur... but alas this particular extension is outside of my wheelhouse, especially with it being built in...
Is there anyone who's familiar with the coding of this extension that knows how it pulls the info from USPS? I'm not opposed to learning... or making manual adjustments. lol. I had to do that to get the stripe extension working again a while back, and then replacing certain files recently. I currently have a "flat rate" option set up that covers most ground advantage orders, but it's a limited option obviously. It's still showing priority and express no problem... just no longer showing parcel, first class, or any of the related services to customers at checkout.
My customers prefer the cheaper shipping options because of what they are buying (mostly stickers).