OpenAI integration not reading uploaded photos

I have an OpenAI developer account which is used to integrate with GlideApps. I also have a ChatGPTPlus account.

When using the ChatGPTPlus account, I can upload an image into a custom GPT and it generates a new image that is a fun variation on the original image.
Good.

When I use the exact same prompt as fuels my custom GPT, but I send it to OpenAi through the GlideApps integration, it ignores my uploaded image. It follows the remainder of the prompt fairly faithfully.

I have tried sending the prompt to DALL-E-3 and to GPT-4 but neither work in the OpenAi integration.

Any ideas on why it works within ChatGPTPlus but not OpenAI?