Pixoo Multi‑Currency Discounts

This app is not working ! it's broken App and i don't know why Shopify not making review such thats app ! after i install the app on my store and click on "Create Discount" like: - Buy X Get Y discount - Amount of products discount it's take me (redirect) to the page in the app says that: "There is no page at this address Check the URL and try again, or use the search bar to find what you need." this app is fake !