1 - Some days ago, I registered a domain name and it always appears as free, why ?

There are some hypothetic cases :
 You decided to pay by check, transference or fax and in this case any proceeding of registry can start before the reception of the Regulation.
 The interrogation instrument isn’t actualized. You can find out the situation throughout our application form of investigation and verify who really is the owner by pressing “ by who ?”. – You don’t send the necessary documentary evidence for the registry.