So I noticed that for 3 years people have been having this same problem where they get this error and it has never been answered.
There is 1 error with this activity: A problem with Facebook prevented your activity from being published. Try to republish in a few minutes.
After an hour on the phone with Facebook, I found out that they said Facebook officially said they no longer support Shopify because the app was never resolved and continues to have problems regularly reported to Facebook so that is probably why it's still giving errors. They suggested me to just remove the Facebook plugin from shopify and use the Facebook Ad Manager directly instead. So I did and that worked fine.
