Hi, hyteckit,
Now the "Capture for Cloud Animator" function is only support to CTA 3.21 PC version.
However, you may try the other function, "Render Image" as followings.
1. Go the the Render> render Image
2. Select the Format to GIF". And then, select the "Sequence."
You also can setup the render size at the "Frame Size." Besides you may setup the "Export Range".
You may check the "Transparent" box if necessary!
3. Click the "Export", and then select the save file folder, and naming the Gif.
Click the "Save"
4. Just go the save forlder, and then drag and drop the GIF file to the Cloud Animator.
The GIF will automatically apply to the Scene and upload to the custom image.
You may try the tutorial, if yiu still have question, please let us know anytime^^
Best Wishes
Cory