Ok! Thank you!
The package should theoretically have been delivered to me by "La Poste", as indicated in your email . After contacting the local post office, it turned out that they had never heard of this shipment, which was finally delivered by a private carrier, in this case "Colis Privé", which forced me to go to another place than the post office, namely, "L'épicerie rouge" in Saint Savinien....! Not a very professional delivery procedure...!