As of my last knowledge update in October 2023, there was no widely recognized entity called "QuestionsLLC" that underwent a name change to "Ask a New Question." This could potentially be a new development or a less-publicized change.
If it's a specific business or platform that changed its name, such reasons for a rebranding might include a desire to better reflect its mission, improve brand recognition, or differentiate itself in the market. For accurate and up-to-date information, it would be best to check the official website or announcements related to the organization.