Cant save settings on Photo Reviews for WooCommerce Settings

Hi!

I am trying to save some settings on the page: Photo Reviews for WooCommerce Settings

But I am unable to. Every time I click save nothing happens, despite clicking 100 times. I am trying to turn off “Send coupon to customers when their reviews are approved”

Do you have any idea how I can turn this off when the save button is not working?

Thank you!