UberEats **** vouchers

As first time users, me and my husband received a once-off first time user voucher. Which is just a **** to get you to download the app, and place an order. When I tried to use my first time order voucher, it threw out the error mesaage: "Currently unavailable", so we then tried on my husband's account and his error message for the voucher decline was: "Not available on this device". Now all of this happened after entering a whole family dinner order (x2). This is PATHETIC! They send you vouchers to attract you to their services, but the vouchers can't be used, and most people will then just continue with the order anyway. I would highly recommend NOT using UberEats. Their menu is also extremely limited. I was so happy with Mr D's delivery services, and will rather order through them, as well as recommend them.