Not working for Variable Products

Hello, I’m encountering an issue with this plugin. Specifically, it seems that the countdown timer is not working correctly for Variable Products.

When I try to set up the timer on the product edit page for a Variable Product, the settings do not save properly. It appears that the countdown timer works fine for simple product type, but not for Variable Products.

Could you please take a look into this issue?

Screen record: https://streamable.com/nczdmj

Thank you for your time and support.