Where Is The Redirecting to PayPal Page?

Where is this page that displays the message below? I would like to style it.

Please wait while you are redirected to Paypal.
If you are not redirected after 10 seconds, please click on the button below.

Thanks!

Hi,

It's the file plugins/hikashoppayment/paypal/paypal_end.php

Will changes that I make to that file be replaced when I update hikashop?

Thanks!

Hi,

Yes, they will.
If you don't want to loose them, you can make a copy of the file to templates/YOUR_TEMPLATE/hikashoppayment/paypal_end.php
That way, that copy will be used instead of the core file and you won't loose your changes when you update your HikaShop.