OVH undertakes to deliver the server within 15 days from the date of the order as specified in the regulations that you can consult when confirming the order.
"ARTICLE 3: ORDER AND DELIVERY
OVHcloud informs the Client about the availability of its Dedicated Server by email, which occurs within a period of no more than fifteen (15) days from the date
of effective payment of the order by the Client."
Therefore it is not possible to cancel the aforementioned order.
* In addition, your account is exempt from VAT. You will see it on your invoices.