I have cracked the safe mode switch, I now have all 3 flight modes working.
I started again from scratch, I had been confused by how Open TX labels it’s functions, I will put a write up on how to bind and set up the Sport Cub S which will cover the other UMX micros with Safe.
I have also cracked the panic switch.
Thanks to all who contributed, each part helped me get my head around what is going on.