Confirmation order mail

[daltan75]

Hi great support, I have a problem whit my site www.xconcept.it
When I buy a product and pay whit paypal, the shopper don't receive order confirmation mail....why?
User, receive it but whit object mail "order pending" and the paypal mail....why?

I'm disperate, can you say me what can I do?please

EDIT: the order is pending on the site too, I must change it in "Confermated" and start the mail :/

EDIT2: I'm testing my site, and I see that if I buy another time whit same mail account, the mail don't start to user....

EDIT3: on the invoice appear ever:

Vi ringraziamo per l'acquisto presso xconcept
xconcept
555-555-1212 Xconcept.it

What is this 555-555-1212?I have substitute the sample dates whit mine :/

[daltan75]

nothing