Anyone do SEO for Bing shopping (organic)?

I know this sub is mainly for beginner questions on Google but I have some struggles with Bing Shopping. My site gets over 100k organic search traffic mainly from Google but Bing too. Also Google Shopping ranks too. I have Bing merchant center setup in Microsoft advertising but my site is not showing at all for Bing Shopping organic. It’s highly optimized and has huge authority, so something has to be wrongly configured for this to be the only channel we are blank on. Ideas?