Did you ever call Progress directly?See if you can contact them, tell them your issue and see if they will take a look at your pictures. You'll have to send the shocks back regardless, just how these warranties work. They then later determine if they can reinburse you with either new shocks or money to buy new ones.
It's a PITA but that's how warranties work on things like this. They aren't just going to send you free ones without knowing the true cause of why they failed. That'd be risky on their end.
And places like Tunersports have no real interest in the product/warranty. They are mearly a retailer. They may have interest in product performance and whatnot, but it's not like they can really do much for you in regards to the product.