Dear all,
The missing form sent to CIO with an explicative letter appeared to be worthless as my initial were returned to me the 27th of december.
Whereas I've got confirmation of delivery of my second mail at CIO, I did not get any feedback/mention about it from CIO (neither by email nor as part of the returned package).
My guess is that, as CIO does not put in place a formal process for such a service, those applications updates are systematically ignored.
Anyway, now, I have re-sent my application on the 1st feb that was received and signed by M C the 7th.
Hope U the best!