Hi Frank,
sorry for the delay. I understand; it is just to see sometimes makes things much clearer, and we need fewer iterations for QA. Some of the questions are not very clear to me, that’s why I asked.
Without development, it isn’t impossible to set different widths for the header and the rest of the page.

I’m not sure what the background box is. Could you send a screenshot to explain?
I’m also unsure what a “Website title on the menu” is. The website title we have is not on the menu, it is where the logo supposed to be. It is a link, and it has controls in Customizer->logo, title, and tagline. It also has an HTML ID “website-title”, which you can target to make additional changes.
Please elaborate a bit more and I will do my best to help.

Hi. Thanks for letting me know. I’m not sure how universal this solution is, but if it works for you and you remember adding it repeatedly after theme updates, great. Let me know if you need anything else.

Good morning. Your invoice was emailed to you this morning.

Please let me know if you see it in your mail.

Good day. We need to take a look behind the curtains, there’s no much we can do right now, it doesn’t even look like it is a theme problem. Please use “private message” to send us access to your admin area and FTP. Thanks.

Good morning! Thank you for providing the credentials. I signed in and attempted to edit the home page, Contact, Our team, etc. – all worked without issues. I suggest you do the following – clear your cache (twice at least) and ensure your website has a valid SSL certificate. Its absence could also cause some trouble. Do let me know how it goes. Thanks!