Grape-eneOS As far as I know, there's no reason why it shouldn't work if your phone supports it. I've never tried taking photos with this mode, personally.
One thought is that since you installed the app from Aurora, it's possible you inadvertently installed the incorrect version (the anonymous account that you were using might have been set up with a device that isn't a Pixel). In Aurora's settings, you should be able to change the device in the spoof manager.