Still waiting for mine for mine too. I'm technically only just over the 45 days because they actually delivered my tablet over a month late, now the keyboard is late too.
So far nearly 3 1/2 months since I first placed my order and still not complete. Samsung really is a completely useless company. Never again.
I received the approval on 29 March...still waiting on the keyboard..over 76 days. Just had contact with the customer service..apparently there is a lack of stock and they could not say when it will be delivered. Altough in stock for sale on the samsung website. My s8 ultra is still in the box as I wanted tu use it as laptop replacement..useless without a keyboard. Very happy with Samsung products, but these waiting times are very frustrating.