ADDITIONAL INFO' allows you to enter additional explanatory text ... be able to generate a new logo. If you want to generate additional logos, you will need to create a Together AI account ...
The latter part of the question refers to what Originality AI can do. The service identifies with high accuracy whether the text it’s looking at has been written by a human or generated with an AI.
I don’t think DALL-E is the best AI image generator but it is a good all rounder. It can do text, it can create photorealistic images (with a slight uncanny valley) and produce artistic work but ...