They have changed their Rewards program to My BestBuy. In the transition, I think they lost our logins and passwords. I called their tech support and they emailed me a new password, then I could log in and change it. It is difficult to get through to their support folks, but that is probably the only way you can get a new password and see your old Rewards account. Mine had points that I don't want to lose.
They are struggling with competing with on-line vendors, such as Amazon. Now they match prices which makes them more competitive. Many would shop there, then go home and order from Amazon or ? to get the better price.
My concern is that they don't update their website often enough. I made a special trip to a store ten miles away (passing up two other BestBuys) to pick up an open-box AirPort Extreme 11.ac. Web site said that store had two in stock. I got there just after they opened and they were both gone. I had to purchase a new one at full price. Could have bought it at the BestBuy down the street.
They also seem to favor Microsoft and Samsung computers with Apple being sideline, based on the displays in their stores recently.