You need to make the MoText object a child of a Connect object. You probably did that before but just forgot about it.
Per the help files (Cloner Object: Object Tab) –
Tip:
Not all objects that can be dragged into the Object field function with the above modes (e.g., the Text Object). In such instances it often helps to make the element a Child of a Connect Object, which is in turn made part of the clone process.
Edit: put the Connect object in the “Object” window of the Cloner parameters.