How do I link my business Facebook page to my e-commerce platform?

[Gabos1]

I’m trying to link my Facebook page with my Shopify account.  Each time I try to connect with the business email login, FB will automatically switch to my personal page.  I can’t link my personal account.  I need my business account linked.  Tried numerous times. Cleared cache and browser history and rebooted the laptop.  Help.