Chuwi Hi10 Air Q64G1908XXX vs Q64G1096XXXX

Hi, whats the difference between those two ? I have the H64G1906, bought the Hipen h2 stylus, but I am having a problem using it. It starts wrtting over the screen without touching the screen … how can I fix it?

Also the specs said it has a fast charging process (3A) , but my comes with 2A charging adapter … is that right?