Unable to find the books I need to buy Help!!!

[Gomezy3k]

How do I find the "books" to download for Herolab? I am using the downloaded Herolab on my computer not the online version and need to buy certain books for the game we are playing. I used to be able to go to the store and find the book and download it. Now i cannot find anything and there is no search option to find where it is.
We are playing Pathfinder 1ed.
The book I need is "Potions and Poisons". I also cannot find "Sunsilk" anywhere in Herolab and am not sure which books might have it.

The DM/GM gave me a list of the books he uses on Herolab and says I will need to get them over time. Unfortunately, all I can find are a bunch of bundles and am totally lost where to find them in the new bundles (or know if they are even there).