If you need to deactivate a device and remove your licence details from an Affinity V2 application, please go the Account screen and follow the steps below:
You will be prompted with a warning that states:
Deactivating this device will sign you out, remove all your licence data and require a licence activation the next time any Affinity application starts. Do you want to continue?
Clicking Yes will deactivate the device and remove your licence details. Clicking No will take you back to the Account screen.