you didn't get the RC controlled versions. the ones you got require and external motor "controller" and aren't programmable. They literally go to one end and stop, there is no "in between" like you would get with a servo.
the ones you want are these:
https://www.actuonix.com/Actuonix-PQ...C-p/pq12-r.htm
https://www.actuonix.com/L12-R-Linea...ol-p/l12-r.htm
https://www.actuonix.com/L16-R-Minia...RC-p/l16-r.htm