...ho risolto installando PiPzap-plugin...adesso AMS è presente tra i plugin e funziona a dovere!!!

...ho trovato la soluzione sul forum Openpli...:
".....The the difference is that PLi uses his own PiPzap code and the other images the PiPzap-plugin
I was curious and installed the PiPzap-plugin on OpenPLi 3.0 The result: not any kind of PiP-problems between AMS and PLi3. ......"