Hi, there is a bug regarding the external key source button in the dyn8. If you Press the button and confirm or cancel the window the console shows the dpack window and stops Operation.
While A&H does tend to monitor this forum, this is NOT the official support group for the company. I would suggest that you “submit a request” on the mail A*H website to ensure this is reviewed by the proper channels. https://support.allen-heath.com/hc/en-gb/requests/new