Sensei Course Quiz missing

Hi,

We have updated Sensei Plugin, Woocommerce paid courses, Sensei Version 3.12.0, and first While QC, Quizzes where working, but now, after several clicks on reset Quiz, all Quizzes have disappeared from all of the lessons.
We are using WP Bakery as well, and I have added a snippet, because of the blocks issue: add_filter( ‘sensei_quiz_enable_block_based_editor’, ‘__return_false’ );, which returned Quiz settings in the lesson back, but they are still missing on the frontend.
Here are the screenshot what I am seeing:
Backend : https://prnt.sc/1mxwc3a
Front: https://prnt.sc/1mxwui1

Can you please help here?
Thanks