You can never win when the theist side has a bottomless bag of superpowers to draw from.
It's like when you were a kid playing superheros and there was always that one kid who just kept adding new powers to his superhero so he would never lose.
So God is all powerful except when he isn't, all knowing except when he isn't, can change reality except when he can't, has a divine plan except when he doesn't, "works in mysterious ways" which is just literally saying "I'm defining the concept as not making sense" and on top of all of that nobody arguing for his existence will define him.
And after all that the argument is we can't disprove that to a made up insane degree, so we're not saying he's therefore real but we're totally saying he's therefore real.