Same problem here.
In my case, the page containing the custom loop template is displaying and the page doesn’t have a custom loop template they are totally blank. Only the Header & Footer are displaying the main content area is blank.
I also tried to upload the previous version but the problem remains.
I am also facing the same problem. If I manually press the ‘update button’ on the generated coupon page then it’s working. But need a proper solution to get rid of this manual process.