Hey
MXKLLY (and
AbnormalMeric)! I've checked in on the investigation for this issue, and as the error message is similar to one we see a lot in Rainbow Six: Siege, the devs would like to ask affected players to try the same steps for Rainbow Six: Siege from
this article upon the release of the full game, if the issue persists.
I hope that you enjoyed the Open Beta, and that we will see you when the game launches! If you'll be playing, please let us know if you're still unable to play after performing the above steps.