Bows can not be fired and crossbows be reloaded while engaged in melee.
I think the it’d sound better as,
“While engaged in melee, bows cannot be fired and crossbows may not be reloaded.”
I think this text from the image might be fine. The peddler could be implying that he only needs to purchase the goods from a single local.
"It is not death that a man should fear, but he should fear never beginning to live." ~Marcus Aurelius
Game: "Characters with a height advantage against their opponents are harder to hit"
Me: "That's not true, and my short axeman is living proof!"