game review uses very low depth so its not very good. Bxa8 is the best move if you let the engine think on it for a moment. Likely it had thought that Bxa8 Qxa8 f3 0-0 c4 and black has some compensation for the exchange as white's king is weak. compared to c4 Rb8 Bg2 0-0 Ne2 where white is simply up a pawn with a queenside majority. both options are good though Bxa8 is a stronger option.
Inaccuracy

game review uses very low depth so its not very good. Bxa8 is the best move if you let the engine think on it for a moment. Likely it had thought that Bxa8 Qxa8 f3 0-0 c4 and black has some compensation for the exchange as white's king is weak. compared to c4 Rb8 Bg2 0-0 Ne2 where white is simply up a pawn with a queenside majority. both options are good though Bxa8 is a stronger option.
Here are the suggestions
Played a game however I got one inaccuracy in game review, and the "suggested best move" makes no sense. Anyone that can figure out why its inaccurate ? The suggested move is pawn c4 instead of taking rook with the bishop