The AI Art section was recently removed together with the @me custom prompts generator to go all-in on our newly released Avatar feature. As a result, it's not possible to create custom images from a textual input or to generate new versions of your @me tag through text.
DawnAI is continuously evolving: our developers are striving to improve the user experience which leads to creating new amazing features and occasionally dismissing others. Keep an eye out for more additions and improvements in future releases of the app!