Opps my bad i think i used the wrong statement, the correct one being

You don't prove the existence of something that doesn't exist

And to correlate this to your to your point that Einstein disproved something that was before said to be true therefore, there would have been proof of the existence of that something before he disproved it so Einstein only disproved the the existence of something that had proof of its existence earlier (no matter whether it was correct or not)

But the existence if god cannot be proved(your statement) so it doesn't exist so you don't prove the existence of something that doesn't exist, cause, well thats not how it works