Appellate courts only review for errors below. They don't reconsider the case, and they don't allow you to submit any new information. You are unlikely to get a dismissal for failure to state a cause of action overturned on appeal, especially if it was done pro se. Normally if a case is dismissed for failure to state a cause of action, you can refile it if you can properly plead a cause of action. Since you had trouble initially, and are not comfortable or clear on the appropriate legal procedures, I would encourage you to seek legal representation.
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