Knight Kite Shields
Were they removed? Cause I only see tower shields.
I think its a bug that happens sometimes, that you can only choose like the Throwing Axe or the Tower Shield. Has happened to me a number of times. It usually fixes itself.
Ghetto fix: Go to return out of both interfaces, then immediately press m. Repick your options with kite shield, heater shield or broad heads, which is what I remember having this bug.