Query 1. Can you please first upload the right (larger) image size for your demo theme or change CSS or add settings for the theme for the visual positioning of header images? I reported it on June 25, 2019. Still not fixed.
Response: Since you have checked the issue in bigger screen size and we have added the image of smaller width, the issue seems to be there however we will add the image of bigger width soon and resolve the issue.
Query 2. One more question about header images. How it is possible to display header images related to tour location and not random?
Response: As for now you will not be able to add the header image specific to each different page. In case if you are using the Travel Log theme, then this theme provides the option to use the featured image as the header image.
Query 3. We are just starting up. The website is on maintenance. I really hope that my one single request is really on high priority and it is not your standard phrase for costumers like me.
Response: This feature is discussed and will be implemented soon but not as soon as expected as we are working on the major version with some other major changes. So as suggested, if you want then you can hire our professional developer.
Also, we would like to apologize for all the inconvenience and we do treasure our user and continuously work for you guys. So, we would definitely not try to make use of the phrase as above and make sure to not repeat it in future.