No template on page before paypal

Hi
Befor user is redirected automatically to paypal, a standard page appears for some seconds.
This page don't show the standard template I have for all pages on the site.
Where I can define that?

Hi,

In Joomla > Extensions > Template manager, do you have assign your template as the default template, and is there another template assigned on some pages ?

Now the template is OK.
But where I can change the content?
Which of the files in settings -> "display" I have to make changes?

To make changes, you have to edit the file "paypal_end.php" in the "plugins/hikashoppayment/paypal" folder.