I am sorry but is this a joke? The reply said I should check with the plugin developer. So I wrote on the PayPal EDD plugin and here; but still no clear answer... Here the answer on the astoundify forum:
"I suspect the number has to do with PayPal (do anything remotely out of the ordinary and they get extremely suspicious), but you’ll want to confirm that with the plugin developer."
Sorry if there was a confusion, but I would really like a clear answer in this topic. I really want to avoid that projects gather sufficient funds and the execution of the paments will then fail...
Thanks