1. USPS does, UPS currently does not. However, as I added a filter for people who wanted to limit which carrier to be displayed given certain conditions, I can add the same for the carrier’s services. All you’d have to do is to send back an array with the whitelisted services (or blacklisted – I’m still thinking which is more practical).
2. Yes, I offer a full refund if my plugin doesn’t work and I haven’t been able to figure it out. However, I do warn you that elegantthemes eStore tends to break eShop (according to the writers of eShop).