Swish Embassy review for Advanced Shipping Rules

This app doesn't play well with large stores. The previous version just took the Product Vendor field and based calculations on that. The new version forces you to Sync products in its own system. It takes well over an hour to sync just 200 products and I have several thousand. If you close the app, it forgets its progress. Keep getting errors to sync a live rate which I have done like 12 times. Extremely buggy. The earlier version was much more solid.