My Facebook business page is not linking to Shopify. I've deleted the Facebook sales channel app 3 times from Shopify and reinstalled. I verified my FB page is "published" and tried to install via a totally different search engine. I continue to get this message.
Rae from Shopify here. I can certainly help look into this closer.
Is the error message you're seeing showing up in your Shopify admin, or on Facebook? Can you please reply to me here with a screenshot of the exact error? That way, I can check it out in full and help troubleshoot this further.
In the meantime, based on the error text you included, it sounds like this could potentially be a local issue. With that said, I appreciate you trying to delete and re-download the app to see if this resolved things. However, I also recommend working through these steps, too:
Let me know how this all goes. I hope to hear back from you soon with an update, and a screenshot of the error you're seeing.