Both meters are moving on the tracks and the master
From your description, I take it that your recorded audio files actually contain wave data in both channels (i.e. are there two channels displayed in the waveform display).
If so, then it likely is a problem with the audio output mapping selected on the master track. On project creation, Podium will create both stereo and mono mappings for all the channels you’ve enabled on your audio interface. Open the properties for the main output mapping, and check that the “mixer output” combobox is showing “stereo”.