I think you did all correctly. I think they are still working out the issues. you may have to restart and reconnect to Live as well. Make sure you see the moves in the preview window in the lower left corner in live, when you select your board in Live. Clear cookies/cache in Chrome . Restart Chrome and give another go. I think they are still working out the issues. I've had same type of issues. I accidentally abandoned 2 games because of this.
DGT: Connected. Please make the moves to sync the board it says on chess.com, I followed the instructions from the video exactly, but no moves no sound. I have restarted the browser and computer. I have joined the beta, I have checked for DGT board under settings on chess.com and I have checked that Live Chess from DGT has a connection with my board. Everything should be working but nothing, no sound from the extension and no moves on chess.com from my DGT USB board. Someone knows why? Is google chrome still compatible or do we have to use Microsoft Edge? Anyone help?