Hi I'm new to e-commerce but find it very fascinating and hope to pursue it. I recently created a Facebook Post-Engagement ad for a product and it was doing well ($0.06 per engagement), with a relevance score of 9. I was using a Post-Engagement ad to gather data, and then decided to start with a Website Conversion ad. I used the same exact picture I used for the PPE ad, targeted the same audience, yet my WC ad is doing poorly with a relevance score of 4. How can the relevance scores differ so much if I'm targeting the same audience?