I suggest you contact Wilco as I believe he deals with the finances, etc... Not quite sure what he might say, but you did donate the money one way or another regardless of how you did. Good luck mate! Also for next time, donating it all at one go might even be cheaper for you via paypal.
Even though it's usually meant to be done all in one go, i think surely a few hours between would still be acceptable? Someone make this man a Lifetime Donator, please!