Sunrise Surf Shop review for Facebook & Instagram

Worst app ever!!! I was forced to delete and re-download because there was an apparent Facebook error that not even support could fix. I re-downloaded and now I'm unable to connect with my existing commerce account as well as activate my Instagram channel which is already eligible for instagram shopping. So frustrated! This app needs to be fixed! You would think a billion dollar company would have the toolset to make stuff like this seemless. Why is this so difficult?