GORNATION review for Zonos Duty and Tax

We've been working with Zonos now for several years. In the beginning it was helpful, we were able to customize the settings on our own and the bugs we had were often fixable ourselves. Today, Zonos has many issues. Since yesterday we have customers from outside of Europe that cannot check out anymore when using a discount code. The answer from Zonos? They are sending a standard AI answer after 12 hours without a fix, not even addressing the issues of the customers. The tool is very important for the function of the shop and having relevant bugs every few weeks/months like this is costing a lot of revenue.