Recently I've got a mail and booking.com is announcing the and of booking.suite era, but very kindly offers options how to move the site and its content. It also provides with phone number, sadly nobody is able to answer questions, just the same answer every single time ( I did call 3 times, just to make it sure): booking.suite doesn't exist any longer and there's no service related to it, please write email. No answer.
Any suggestion where can I find help?
You have posted this on the partner forum so we are not able to help with this. Contact the booking.com help team using Inbox icon on Extranet.