The fact that there are some of the content creator gambit right there have the (??) thing(blunder). In fact those gambits are actually... great! Why do they make chess engine rate the move by material? They should have been making the moves with position too. It matters because no matter you have 5 queens, the only 2 rooks can checkmate you by bad position. I think they should know this before rating the move with material point without position.
The engine provide an objective winning chances evaluation that determines what classification to give, with some rules around it. Game Review depth is going to influence the process as well.
For game review the site uses Stockfish and wraps the classification system around that evaluation output change for a move. So even if there was an engine issue, it's not one the site would be able to fix really.
The fact that there are some of the content creator gambit right there have the (??) thing(blunder). In fact those gambits are actually... great! Why do they make chess engine rate the move by material? They should have been making the moves with position too. It matters because no matter you have 5 queens, the only 2 rooks can checkmate you by bad position. I think they should know this before rating the move with material point without position.