identification and visibility


I've just joined Booking.com and I can't get through identification on the homepage because my email adress is not registered... 

When I check on Booking, my apartment doesn't appear although I've completed all the informations required (as far as I know). Is there a delay between inscription and publication of my offer ?

I'm supposed to enter a code but can't find it in my mailbox. Is that code reaching my house by normal mail and is it the reason why customers can't find me yet on the platform ?

Thanks for your help

Best regards