Braces: what is normally done when the front teeth are a different length? (Photo)

Hi so I have had braces for 10 months now and it seems as if my two front teeth are different lengths (with the left tooth being longer). However, I can also see that my whole right mouth is slanted upward. I asked my ortho if they could adjust the bracket on my right front tooth higher so the tooth can be pulled downward, but, they said they don’t recommend adjusting the bracket because “it would make the gum line of the right tooth lower than the gum line of the left tooth”. Is this true?