@Bootie it is very likely a super-simple fix. I can help you with a brief troubleshoot if you're willing.
For example - when you open Discord, down in the left hand corner, next to your avatar, is a cog symbol, for settings.
Then click 'Voice & Video'. You can test your microphone here, and set your push-to-talk button.
Apart from the settings, when you click the FGM channel on the left and then click on the Arma group to join chat,
double-check that you haven't accidentally got yourself on mute (on your little avatar bar). Sometimes happens.
It'd be great to have you in the group again - don't let this minor hurdle scuttle your ship.
Discord has been MUCH better than Arma3 voice chat...less delays and interruptions when having conversations.
For example - when you open Discord, down in the left hand corner, next to your avatar, is a cog symbol, for settings.
Then click 'Voice & Video'. You can test your microphone here, and set your push-to-talk button.
Apart from the settings, when you click the FGM channel on the left and then click on the Arma group to join chat,
double-check that you haven't accidentally got yourself on mute (on your little avatar bar). Sometimes happens.
It'd be great to have you in the group again - don't let this minor hurdle scuttle your ship.
Discord has been MUCH better than Arma3 voice chat...less delays and interruptions when having conversations.