Hi,
The popup indeed doesn't look great on your screenshots and for several reasons:
1. First, the scrollbar. That's indeed not nice but unfortunately, we don't control that. The popup box is actually sized to display properly, without scrollbar by default. The issue here comes from your Joomla template CSS which styles the message of the popup with its own styling and display that green X icon at the top left of the popup content and because of that, all the rest of the content goes down and the browser has to add the scrollbar so that the bottom of the content can be reached.
The solution here is to modify the CSS of your template in order to not display that icon.
Adding such CSS should solve the issue:
.close button{ display: none !important; }
2. Regarding the size of the popup, you can change it by simply configuring the setting "Add to cart popup size" of the HikaShop configuration. If you need to modify the content of the popups, you can edit the file "notice" of the view "checkout" via the menu Display>Views and if you need to modify some CSS for the elements in it, you can follow this tutorial on how to customize the display:
www.hikashop.com/support/support/documen...ize-the-display.html
3. Finally, regarding the responsiveness of the popup:
The popup is not responsive, meaning that it won't dynamically change its size based on the screen size. However, it will automatically display centered on the screen. So the screenshot
www.hikashop.com/media/kunena/attachment...op-up_OUTDATED_1.png
is not accurate because you resized the screen size (the browser window) after displaying the popup. If you do it before, as it would be on a smartphone, you will get your popup centered and, as long as the width that you configure in it is not too wide, it should nicely fit on a smartphone screen.
Your points being either about a configuration option you didn't find or a CSS problem of your template, I would appreciate that you keep your harsh words for yourself next time. We're happy to help, but it's better with a smile