Details

When submitting or changing a Screen Name, if you add an apostrophe into it such as O’Leary, for example. It will submit ok.

But if you revisit the form and submit it again (with that apostrophe in the Screen Name still) it will return an error saying “Screen Name unavailable.”

The error will not go away until you remove that apostrophe. Once you do, it will submit.

Then, if you try adding the apostrophe back, it will submit properly again. But then revisiting and submitting the form again triggers the error again.

I assume it should allow the apostrophe altogether.