Hey @Hamidreza_Soltani, thanks for reaching out and sorry for the delayed reply!

It sounds like you’re accidentally selecting the entire frame, instead of the individual object. Is this object nested within many layers?

If so, please try to deep select to select the element before attempting to move it. Hold down Cmd or Ctrl to select the top-level frame or a nested layer or object by clicking it on the canvas.

More info about selecting individual layers here: