EPIKO review for One Click Upsell ‑ Zipify OCU

Post purchase upsell doesn't work with Klarna, apparently. So a big no in Sweden, Denmark, Finland, Norway, Germany etc. The UI is convoluted and unintuitive too. I put off configuring it for a week because it looks like was made in 2004. The "click ATC button" pop-up is ugly and slow, and while Vitals does both better, Vitals doesn't allow you to combine discounts with discount codes. Ugh. Nothing works except Kaching lol.