tivoli was made for denmark, so finding paperwork isn't easy.
similar games are the 931-A (circus) and 903 (mustang). Paperwork for those is on
https://bingo.cdyn.com/slots/https://zuz.dk/ has the game, so maybe use their contact form ask if they have anything ... suggest using google translate to ask in their native language.
usually the way those style games work is you enable the jackpot feature for 10 spins, and the motor driven unit in the head is changing the payout amount. If the third reel stops on the symbol that looks like the pattern on the top glass, the game pays whatever amount is lit there.
is your game not counting the 10 spins?