Some eyetrackers do not support animations between target stimuli in their calibration routine, so although you have enabled animation in your calibration routine, due to the limitations of the eyetracker you are using any settings for animation will not be used.
> 2021.2.0
If you are only using the current eyetracker to test an experiment and will be using one which supports target animations, then you don’t need to do anything. This alert will stop appearing when you use the other eyetracker.
Otherwise, you just need to be aware that the settings you’ve specified for animation will not have any effect.