Constant Error: BC-127

I keep getting this error . ive read to link my account but it doesnt give me an option anywhere on the screen to do that. Ive tried reseting the game and i have just bought this game as well. Nothing seems to be working as of now

You may need to link your console account to a Battlenet account if you have not done so already.

However if these issues are recent as in the last 10 minutes, please wait as blizzard is currently experiencing a disruption with their Network providers.