I had the same problem.
It was caused by the PayPal Plus Plugin by Inpsyde.
Changed back to PayPal Checkout Gateway and it works.
Now i got the problem that we need to use the new PayPal Plus Plugin to get better conditons with PayPal….
But PW Gift Cards works like a charm 😀
Hey Saravana,
we had problems after the update too. Whenever a big amount (above 20) of one product was added to the cart it resulted in an empty page. One digit amounts never failed…
Hope this helps your bug tracking
We already rolled back, so i can not provide a live example.
Thanks for this great plugin!