Artemis Bow Atma

l've just complete all 3 books necessary for the Artemis bow Atma to increase my VIT to only get +41 and not +42 VIT which is suppose to be max you can increase for the bow. Is this suppose to happen or do l have to complete all 9 books to get the full VIT ?

Actually, each book only give max +2 of the relevant stat so +41 is correct.
It's possible it goes to +42 once you hand in the fully done Atma to get an Animus, since that is what the datamined Animus stat lists.

okay thankyou