I had a weird series last month. Completely basic product ad rejected as “controversial content” then approved on appeal. Ads account shut down for “scam” violation, reinstated after appeal, only to find business account shut down without notice, also reinstated on appeal after going through business verification process. Haven’t turned ads back on there but won’t be surprised if more odd stuff happens. I was told by Shopify team that manages their fb ads app that FB is currently trigger-happy on enforcement all around.