Appointments+ Key file does not exist Google Cal


I am having some issues with Google Calendar synchronisation... "Key file does not exist" problem..
I don't get what I have missed. I put the .p12 file on FTP (/wp-content/plugins/appointments/includes/gcal/key) but my file's name is not only composed with numbers but also gets the Projet name.. is that normal ? (see enclosed file)

Can you please help me ? Do you need my credentials ?
Please answer me on this email adress:
Thank you in advance.