Yes it is confusing!!!
Let me explain:
First, It is true that the algorythms are tied to the user account, not the device. If you then sell your H9 you will sell the device (core or regular) but NOT the algorythms you bought.
BUT, there's an "exception". If you buy all the algos needed for a core (or the regular) to become a MAX, the device itself become a MAX.
So, lets say you buy 2 COREs, then buy all the algos needed for 1 CORE to become a MAX. They will both have all the algos as long as they are both registered to you. Then if you sell the core that you upgraded to a MAX, the buyer will have a MAX. If you sell the other (not-upgraded) core, the buyer will have a core.
Hope this help
LA
