Need help with AI Tagger Universe plugin - cannot get it to work

I am trying to get the community plugin AI Tagger Universe to work. So far, I have been unable.

Things I have tried

I have followed instructions exactly to the letter. In the setup I have chosen the following parameters under options:
Service type = cloud
Cloud provider = OpenAI
API Endpoint = used the link provided by OpenAI to use with this plugin
API Key = I have inserted the key that I made via my OpenAI account
Model Name = gpt 3.5 turbo

These are exactly the parameters listed by OpenAI to use their LLM. Of course, I have enabled the plugin. Still no luck.

I have examined the developer Hu Nie’s Github documentation and it seems that I am doing everything I should.

I have migrated to Obsidian from Complexities and I loved the way Complexities built in tagger works. It is incorporated by default into their app. It would be nice to have a comparable ability in Obsidian.

Other people seem to have problems too: