A major issue is being making fake accounts and still not knowing if someone is telling the truth about their std status . I think you should include another category to input your results as just another way to show proof and collaboration with any medical company to add a qr code and having it like to someone’s results in a private way without leaking personal data. The other I think would be solid is finally implementing id verification for that extra trust that someone is not catfishing someone or making fake profile