as you've probably noticed, the minimum amount of letters you can have on your name is three (3) letters, but there is a way that can help you replace those letters with an invisible one
Copy & Paste:
Depending on your browser, you might not be able to see it.
This should work on most devices. If it doesn't, switch devices or Internet browsers. Sometimes you might be able to see that box, but on another players screen, it is invisible. This can be used to erase your whole nickname also