A: Hi, yes and no.

If you purchase a tier 1, and then you "purchase" again a tier 4, you will have two different licenses and two different accounts. What you probably want to do, is to purchase tier 1, and the "upgrade" to tier 4 if you want.

To do so, you have to go to "Products" in Appsumo, locate youbooks, drop down the list and change licence. It takes affect immediately.