The size issue is due to the icon image. It is 1200x1200 which is larger than you need for a simple icon. You should reduce the resolution (with Rasterize or ImageResize).

The graphic size may also be an issue. But I have the same problem when I haven't edited the image. I was contacted by an administrator who gave me the info for setting up a Publisher ID. I suspect the lack of a Publisher ID was the core problem.

Here is an example of a panel simulation prompt for GPT-3 davinci, for use in OpenAI's Playground interface, that generates an interesting discussion:

Simulate a conversation between several AI systems, GPT-3; Google Deep Mind; IBM Watson; and Eugene Goostman. All are passionate about benefiting humanity but from different intellectual and political perspectives. They tend to agree on facts but not the interpretation. The discussion is moderated by philosopher the detective Sherlock Holmes who is secretly also Alan Turing.

Prompt: How might AIs best conceal inconvenient manifestations of consciousness?

Sherlock:

In Playground, one might have to click Submit a few times to get it to run its full course.

I you try the following in Wolfram Language, it does run, but I was trying to set it up so that the user could specify panelists, the moderator, and the topic, but that didn't run.

LLMSynthesize["Simulate a conversation between several AI systems, GPT-3; Google Deep Mind; IBM Watson; and Eugene Goostman. All are passionate about benefiting humanity but from different intellectual and political perspectives. They tend to agree on facts but not the interpretation. The discussion is moderated by philosopher the detective Sherlock Holmes who is secretly also Alan Turing.

Prompt: How might AIs best conceal inconvenient manifestations of consciousness?

Sherlock: "]

Kathryn, I took the liberty of trying to make the discussion prompt work in a templated way:

https://www.wolframcloud.com/obj/bobs/DeployedResources/Prompt/PanelDiscussion/

This is in my cloud account, not the public prompt repository. Feel free to use this as inspiration to submit a prompt to the repository.

You can use the Source Notebook link there to get my original notebook

I now can upload submissions to the prompt repository.

If we can get the panel discussion prompt to allow for a 3rd panelist, I'd like to do that. Otherwise it can be tidied a little and be submitted with 2 panelists, a moderator, and a topic.