Why can't I post ads on Quora?

I don't sell products that violate the policy, I just try to sell some normal items but I can't run an advertising campaign even though I've tried many ways, the answer is always "the content violates the policy" and account suspended. Hope someone can help me, of course I will pay for the lesson

My guess is that the ad's copy or images may violate Quora's advertising policies. For example, overly exaggerated claims, misleading information, or inappropriate images may result in the ad being rejected.