Just had a game where I had several assists that weren't counted. After the game, all of my stats were zero - no shots, no passes, no points, etc. I confirmed via the web API that my stats had not changed. However, the game definitely counted (my GP went up).
This is the first time I've seen this in NHL 25 and it happened when I made the next tier (gold 3). It could be a coincidence. The only other anomaly was that a player on my team was disconnected when the game loaded. However, my other human teammate had stats after the game.