hello, i hope someone can help me. sometimes the jackpots work, sometimes they don't. when they don't, the seesaw thing at the back stays down and the jackpot ball goes to this shoot at the right bottom and just queues up and nothing happens. sometimes the jackpots work. What should i do?
i have a video of the process if anyone wants to see it and can send photos if that would help

any help appreciated!!

thanks