Hello, Juergen,
Thank you for contacting us and for using XStore.
The text was changed just for the demo, you can do the same using the Loco translate plugin. Install and activate this plugin, go to Theems > XStore > create new English translation > find and change the test > check the result, after that the Loco plugin can be disabled.
Quick View settings you can find in Theme Options > WooCommerce > Shop elements.
Please test different Design Types in Theme Options > WooCommerce > Shop > Products style.
If you have any additional questions or concerns, please do not hesitate to reach out to us. Our support team is always available to assist you.
Kind Regards,
8theme team