Could you select the ‘Resize’ preprocessing option in order to change the image size? I thought the issue was that you could not alter the image size preprocessing step.
If so, I don’t think I’m understanding your problem correctly. In this case, could you explain the issue you are experiencing in deeper detail?
I’m still not understanding your issue. What do you mean that it is “missing”?
The message you highlighted states that the Resize option is not applied during your preprocessing (which we recommend you do). While highly recommended, it’s not required.
To apply resizing, you can click the “Edit” button, then the “Add Preprocessing Step” button, you can select the “Resize” option, which is present on the menu of available preprocessing steps, as shown in the image that you sent.