Hi Rumblers!
We've received many reports from players who said they were experiencing issues with RUMBLE's voice chat, where they couldn't hear their opponent or vice versa. We have thoroughly investigated this issue and made a fix for it. So now voice chat should be working again CONSISTENTLY.
If voice chat still doesn't work, please check your microphone device first. If that's all good, please leave some feedback in our Discord server: https://discord.gg/pEqWKBeD
Later!
When swapping regions, your Voice Chat should swap regions with you.