Hi I can join group workouts but will not let me join a race please help

How are you entering races? I enter races using the Zwift mobile app from the events page. Make sure that races are enabled with the filter. Then when I run Zwift I get a blue “Join race” button on the screen a second or so after pedaling if the race starts within the next 30 minutes. Just a matter of clicking on that or riding around until just under 5 minutes to go where it will auto join you.