Obtain Rainbow Six Beta keys directly.
AAAT-YHXN-79NK-K6LA LEHL-34E9-DNA4-7TCK KBDA-NAWM-9DXC-BJUD CEXB-XQXY-7NCK-8ULM
Bots will be included. Under the assumption that there are bots.
Invalid codes
I tested everything and received the identical error for all four.
Ubisoft -__-
They say the keys are secured with an email lock. Not sure what that process involves.
Bots