I don't know how to report that in plasmoapp/replay-voice-chat, so I did it here.

I have a replay with voices from PlasmoVoice and last version of PlasmoVoice and replay-voice-chat with ReplayMod, but when I render replay as video, I can't hear any voices. Also, if in replay-voice-chat from Simple Voice Chat the audio renders as another file from the video, in this case I didn't find any audio files.

ReplayMod doesn't support audio as it, it just renders a video. You can only replay the sound data, but not merge it with the video. See #552 and #903