I don't think you should have given in. You have set a precedent.
Besides, anyone who plays the game for the FIRST time and does not even read the rules before playing has no claim that he was treated unfairly.
Nobody wants to take responsibility for their own screw ups these days. It is always somebody else who should go out of their way to accomodate them, is how they approach life.
I think that is more like 156mphserve said, it's a decision of every manager I think that all made mistakes and is the first time that they played this game, by the way a lot of users made mistakes in his draws and I fixed all the draws and by that some results change if I can fix a draw or something I will do it
But the manager does have the right to not do it, it's not their job to fix mistakes. But if they do fix it then they should fix it for everyone who made that mistake
And I think that this is the principal point it will be unfair if I only correct the mistakes of some players