Having taken the Human Ancestry Feat “Viking Shieldbearer” there is no way to indicate that I’d like to select “Battle Axe” instead of Longsword, and because the character is an Animist (Simple Weapons only), the character sheet isn’t registering that she is proficient in using Battle Axes.
Thanks for the report! I think this feat existed in the early days of our system, and hasn’t been updated to use some of our new capabilities. I’ve put in a ticket for us to update it when we can.
In the short-term, you should be able to grant your character proficiency in a weapon you have by clicking/tapping on the weapon, and then clicking the three vertical dots in the top right of the drawer. This’ll open the edit/override menu, one option of which is weapon proficiency. (This is of course not the long-term solution, we’ll get the feat fixed in the future!)