TO WHOM IT MAY CONCERN

to whom it may concern是英文常用句語， 意思是:
致:這可能涉及的人

to whom may concern雖然中譯(致可能涉及的人)勉強解得通，但漏了主詞it，在英文說法不通，文法也不妥，所以是錯的。

Hi,

No, you cannot change it as it is an English phrase.
It just stays the way it is.

We usually use it in letters like commercial letters,
formal letters and when you are sick, you will receive a letter with this phrase on it from
your doctor.

Hope you understand it more now.

Ciao

Yes. It's wrong grammer.