I'm working on a small project of simulating a wireless transmitter and receiver. First of all I was unable to find HT12E/HT12D codec in the library of proteus so I created them following the steps from this video https://www.youtube.com/watch?v=-J2T35RfBA0&t=609s
After that I downloaded Modulo_RF.zip that contains the transceiver and the receiver.
and lastly after pressing the play button in the bottom to start the simulation nothing happens.
Can someone please pinpoint the problem