[2020] problem authenticating the owner ship of this product.

Hi azipkey22a! An authentication error normally occurs when a user is signed into the incorrect Ubisoft account than the one the game is activated on. First, make sure you're signed into the Ubisoft account on which the game was activated. If you're still not having any luck, please reach out to our team at support.ubi.com with the following information!

1. Usernames you may have used in the past.
2. Any email addresses you own.
3. An image of your Ownership folder. You can locate this by navigating to the following folder: C:\Program Files (x86)\Ubisoft\Ubisoft Game Launcher\cache\ownership

They would be glad to provide further assistance to help get this error resolved. Thank you!