I just checked both Japanese and English and was able to speak with Runa.
First of all, please buy it outside of Steam, the Steam version does not have the ability to talk to her.
Second, does it recognize speech? (Come here) or something like that to move Runa around.
Finally, please fill in ChatGpt.txt in CustomData with only valid ApiKeys.
If ChatGPT is free, please check the expiration date.