This issue started in 22 when they tied the online bs into RTTS. Before last year this was not an issue, but this is what I have found to work.
When creating a new player, ensure it is selected in the top corner. Go no further, exit the game, restart it to ensure the new player is selected, and
continue with player creation and draft.
RTTS should be a separate mode like it has been for over a decade, it is a money grab to get people to buy cards.