You only want an administrative address, whatever your legal status:
The mailbox is a service offered by Soft Consulting to collect your professional mail at a different address than yours.
In other words, the PO box is your outsourced mailbox.
You can receive mails, and also packages.
Soft Consulting is ...
The possibility to rent a mailbox, accessible 24/7.
For various reasons, you do not want to receive your mail at home; you leave for a long journey and fear that on your return your mailbox is full or overflowing.
Even in case of prolonged absence, your mail is carefully preserved. You can receive registered mails, and also packages.