@TCCGavin0514,
You will not hear anyone who is a native speaker address someone as server. That is a descriptive word, but it is not used as a form of address. You will not see a native speaker write "waitor," because that is not a word in English. The word you wanted was "wait
er."
Although a man or woman might approach your table and tell you "I will be your server this evening," one does not address them as server. If you wish to get the attention of your server, you might say: "Waiter?," or you might say: "Miss?" Although it would not be incorrect, I don't believe I've ever heard anyone say "Waitress?" to get the attention of a female server. Say "Waiter?" or "Sir?" or "Miss?" to get the attention of your server.
If you are in China and you say: "Waiter?" I don't think the person you are addressing will know what you are saying. (That was a little joke--the fact that you are in China has no bearing on how the English language is used.)