I think you are referring to the AquaVitro product. I've never used it personally, but it sounds a lot like Prodibio BIO DIGEST which I have used only much faster. I can't vouch for Seed, I have used the AquaVitro product "Balance" and it did exactly what it said on the bottle. From that experience, I'd say there is a decent chance the product line is solid.
As far as your parameters go, they seem a little odd for 1 day after use. What was your ammonia level before you dosed the product? Still having an ammonia reading and a nitrate reading that high but with no nitrite reading is not something I've seen before, that's what I think is odd.
The normal nitrogen cycle is ammonia rises then starts to fall as nitrite rises, as the nitrite falls the nitrate starts to rise, by then ammonia is usually at/near 0 but nitrite stays around a while longer. Being that it has only been 1 day my SWAG is that the water you used to make up your tank water had the nitrate in it already (did you use RODI or distilled or just tap water?). Whatever you are using to bring the ammonia up is only just now starting to give you a reading (fish food, shrimp, whatever... hopefully you are not live cycling).
With a little more info on what you were doing to cycle the tank from the beginning would help eliminate the guesswork.
