I just got a Samsung S20 Ultra. I spent many hours on the phone, and in chats trying to get Samsung to accept my IMEI number to register the phone. All to no avail for 3 days now. They do not even know that this is a "known" issue. Seems elementary to check on this before releasing the phone! And how do we get the promised rebates???
Apparently, the database with IMEI numbers did not talk to the database used by the registration app. I am registered now.