Yet Another PayPal Stupidity

Paypal is at the top of my bad vendor list (for business use). I setup a donation account for Esplanade Playspace, one of the non-profits that I am involved with. I know they want to verify that the organization is real. That is a good thing. But when I upload a document that relates to our 501c3 status, they tell me I cannot put more than three numbers in the file name? This is not even the actual file name, just the title field.