I used the older version previously after update to the new version i ran in to a few issues. I listed them here hoping it would help you or you team fix it in a timely manner. Maybe due to a lack of testing before deployment that this is happened, but i still hope this plugin get better cause it is quite useful to me in the past.
While the REST API work in the latest update, i see it lack logging meaning the dashboard wont register the token used by calling the REST API, maybe add a way to identify the user using the API would be a lovely addtion.

The trainning function after trying all 3 google embedding model gave me the same response(yes i correctly configure the pinecone vector db to each model):

{
  "success": false,
  "data": {
    "message": "Google Embeddings API Error (400): * EmbedContentRequest.model: unexpected model name format",
    "code": "google_embedding_api_error_logic"
  }
}