Sounds don't play on successive slides
I have a keynote presentation (a "game show"). On each slide 5 different sounds (bells, buzzers, etc.) are to play on click. No matter which slide I play the sounds perform as expected on that slide, but on the following slides they remain silent. If it works on slide 1 it doesn't work on 2, If it works on 7 it doesn't work on 8.
MacBook Pro 15″, macOS 11.2