Citra not allowing me to regenerate console ID

I’ve been using the Citra nightly and canary builds to trade with myself in Pokémon US. It’s worked for me three times in the past, but I tried to attempt the same thing today and Citra would not let me click the “regenerate” button for the console ID, or access any of the system settings in the same box (the buttons are greyed out and I cannot click them). I’ve restarted the games and my pc, but I’m not sure what the issue would be. Can anyone offer some help?

It’s likely because you are running your game whilst trying to change it. System settings cannot be changed whilst a game is being emulated.