UTO review: China tour

The tour that Travelzoo promoted was sold to us during China's zero Covid policy. The up sale of tours were also sold to us during the China's zero Covid policy. The tour was even re-offered by Travelzoo after we paid for tour and add ons. Now we are told that because of the zero Covid policy, we cannot take the tour to China that we paid for. UTO refuses to refund our money, but will only issue travel credit. The other UTO tours are ridiculously expensive. Why is Travelzoo aiding UTO in this bait and switch scam?