probleme de mot de passe skype

Bonjour
So i have  problem with my skype pass word.
the last time when i wanted to connect in my compte ,, i cant he say to me thet the password and the pseudoname are not the same.
but i don't understand i want to change my password but , ihave always  problem
i can't change mt password
firstly : i recieve email in my email. in this message there is the code or the serial but when i want to write the new password i have this massage
"""""""" Une erreur inconnue est survenue. Veuillez réessayer"""""""""""
but when i yrying with other copte and with same etape i can change the password
but with my propre compte  i can't so where is the probleme
please  hep me.