Panerai servicing (info / official process) for my 312

[Speed]

Just started googling but hoping to short circuit / cut to the chase.

Can someone post a link / give a phone number to find out how / where to send in my watch?

I can’t pull out the crown to set the time. This has happened before...and I managed to get the crown unstuck, but I think some adjustment is needed.

I am dreading sending in the watch - but what choice to I have?

I’ve heard more nightmares using an AD to send in so I want to go direct.

Thanks