Glass Half Full review for Upcharge Surcharge Fees Tariff

Spent 2 hrs trying to set this app up today and had no success. I watched every video, chatted with Shopify and reached out for support. No one was able to help me set up % based fees in my store. Don't waste your time or money with this app. Shopify cannot make this app work even. This is a genuinely awful user experience and none of the content provided helps install this app.