I entered the domain of their online shop in the search box of the mentioned page and those pages are validated and authentic.
But, the domain
www.abelssoft.net isn't. And, the COMODO certification logo is there to show people their domain is the real deal, since its certificated, in this case by COMODO, when the certificate for the domain does not come from COMODO.
I'm not saying the site is fake or anything like that, but, the first time I checked it, I see that, despite there's the COMODO logo there, the certificate for that domain is not from COMODO.
This confuses people. It sure confused me.