Trying to register some stamps I received gives me an internal server error.
But I registered a different one a few minutes before and it gave me no error. Trying to register the other one again tells me it's already been registered but no server error. Making up a number and trying it doesn't work of course, but gives me no server error. It seems like it is only this particular ID that produces an error. Trying a few hours later doesn't change the server error, and doesn't change the fact that other things produce no error.
