Hello Leejosepho,
yes it’s a local install on a QNAP device.
Your tip above solved the issue!
I have added to “~WordPress/wp-content/themes/travelify/functions.php” the following lines:
update_option(‘siteurl’,’https://192.168.178.100:8081/WordPress’);
update_option(‘home’,’https://192.168.178.100:8081/WordPress’);
Many thanks for your quick answer and great help – have a good weekend!