First time order. It took me 40 minutes to make an order because application had defects on checkout. To be specific: discount was applied but when redirected to the bank app for payment - it tried to claim 100% price ignoring discounts. another one was when I selected the "change payment method" and went back, the checkout button was not reacting on clicks anymore. No idea how you test the app, but it was a horrible and annoying experience trough entire user journey