What I didn't realise is that you need to pay for the API usage separate of the ChatGPT plus app (which is unfortunate). You may want to add that to the set-up intructions page so potential buyers realise what they are getting themselves into as it is mandatory to get the app functioning.
Viewing post in Not working on Windows 7 or 10?
Apologies for the oversight, I have added your suggestion in the installation instructions.
OpenAI has a free 5$ trial usage. This should be more than enough to finish a game (or two), unless your game's content is entirely AI generated. It also uses a fine tuned model tailored to RPGM as opposed to a general assistant model by ChatGPT's, so the error resulting to it being cheaper than having to use ChatGPT 4. As the model is further trained, it'll become cheaper and faster to use in the future as well.