This error is driving me nuts!
I disconnected my FB for WooCommerce plugin today because I was having some problems and wanted to start from scratch (or close to the beginning). Unfortuntely, when I tried to reconnect, I got the same error message that’s been listed above:
Could not retrieve Facebook Business Extension System User
I’ve cleared caches. I’ve deleted system users and the plugin and reinstalled it. No luck.
Please help
UPDATE:
About 20 minutes later, I got it to work but in a very roundabout way. I installed the Facebook for WordPress app (as recommended above). That still wouldn’t connect me. But then I went back into my shop and clicked on publish updates. And that made the shop appear in FB again (I’ve never been able to get it approved for Instagram). Anyhow, once it showed up on FB, I tried the connection between FB and WooCommerce and it finally went through without the error message. It still seems a little off, but I guess it works for now.
Related: I just wish I could get IG shopping approved. That’s the whole reason I disconnected and tried to reconnect. What a mess. As a test, last week I tried to connect a new Shopify shop and a new WooCommerce shop to FB/IG. The Shopify shop is now live on both FB/IG without much heavy lifting. The WooCommerce shop is only on Facebook. :-/