ShipMe ‑ ZIP Code validation

I had high hopes for this app, I've paid for this for over a month now and I've messaged support 4 times now, they have NEVER responded. This app has a conflicting color scheme with my website making it useless! I've sent both emails and using the Shopify internal support requesting help and NOTHING! The app doesn't work for me and the customer support is non existent! I would have loved to give this app a good review unfortunately that isn't the case.