My son says we must have won a huge price for the weirdest problem ever!
I bought 2 shakers, a pink for my daughter and a blue for me son. Now my sons is having this freaky thing with his. When you turn it on, instead of having that drum roll it says “one <waits a second> one” and then the off drum roll sound and off it goes.
We tried several new batteries and exchanged SD card with the one that works in the pink shaker but nothing helps.