This review refers to an earlier version of QuantPad, and I’m sorry you had this experience. Several of the issues you raised — stability, long prompts, execution, usage limits, and the separation between ideation/code workflows — were real things we needed to improve.
Since then, we’ve rebuilt the platform substantially. QuantPad v2 now uses a project-based virtual filesystem, on-platform file execution, improved chat and artifact handling, expanded market data access, and a much more capable workflow for research, coding, and iteration. The product today is materially different from the version described in this review.
That said, I understand the frustration, especially if you were running into crashes or usage limits at the time. If you still have an unresolved support or billing issue, please reach out directly and we’ll review it.