No, it's not working. No, it's not just you. YES, TK IT knows about the problem. No, it probably won't be permanently fixed any time soon because TK IT sucks.
You should make your own guest list tool in Excel or a similar program. People have lost all of their info.
And for the love of all that is holy and beautiful, please stop making new posts asking about it.
Disclaimer: I realize this will not stop new posts about it. I also realize I am contributing. But at least my post has some answers

Everything the light touches is my kingdom.