Adhesive squares are sold in packs of 5.

To remove and re-position SoapAnchor you'll need a fresh 3M adhesive square 

Remove by holding device with pliers and twisting clock-wise. To avoid injury, DO NOT use your bare hands.

Then blow dry the original adhesive, and re-apply a new adhesive square directly on top of it.

Be sure to clean bathroom surface with alcohol and dry well.  Wait 6 hours for adhesive to set.

BTW - have you considered the interlocking squares as an alternative?