I actually pre-ordered my device on the 3rd of Feb the day mtn released pre-orders. Picked device up on the 20th of Feb registered the same day for my tab and received that on the 2nd of March however I haven't received my 2k voucher as yet. Although...

Unfortunately you need to be signed in from the new device dnt believe what the agents tell you sometimes they give incorrect information

If this doesn't appear on your benefits then it's not available to you but remember you have to do it using your s23 device all relevant accounts must be signed in inorder to obtain the reward

Look under benefits on samsung member's it should be at the bottom of your rewards section