I know you target the Adobe products with the NIK collection. But there is a growing number of Affinity Photo users, where the Viveza plugin caused pink color shifts in the past, but only in the preview, not in the output. See at the end of the forum page here:
Maybe getting in contact with Affinity Photo guys and solving that issue could provide you several thousands of addional sold NIK licenses. The Affinity Photo people are very cooperative to ensure that external plugins work in their tool.