App is egregiously slow, buggy, and lack of async makes it painful to use
Add a couple dozen things to your cart, now try saving them for later to check out an order. Quickly you'll find that there's no way to just bulk save the whole cart for later. You can try saving individual items, but the lag is extremely extremely bad, like a 5 second hang delay where the app locks up because they aren't using async operations.
I really hope they can fix the major performance issues... do they run perf tests? That would easily catch issues like this before they get to prod.
