Quiz doesn’t work

Hello!
This week I added 6 quizez at https://walletinvestments.ru/tests/
After addidng 7-th (it’s under password) all quizez stopped work. Even open one for everybody https://walletinvestments.ru/tests/test-na-finansovuyu-gramotnost-ot-finra/

Put the button “Begin test” and nothing is going on.

The page I need help with: [log in to see the link]