just press the green flag then the space bar also the link to the studio and the voice changer is in the notes and credits also I would suggest following all the curators and managers of the cyn-vasion studio and you see that image in the start search cyn-vasion and press studio and look for the studio with that image that's the cyn-vasion
this is basically an ad for the cyn-vasion studio on scratch the link to the cyn-vasion is https://scratch.mit.edu/studios/35727359 the voice changer I use if free and is online the link is voicechanger.io
