I have a very urgent matter.

I've finished working on the development version and launched the website. However, the header is broken. Lots of errors popped up.

Is it because of the license key? I have proof of purchase, and on the development version you entered the license yourself.

EDIT: it looks like the HEADER BUILDER didn't lose the header when changing the address. All header settings have been cleared.

If you don't know how to fix it, maybe I'll restore the developer version backup in a separate folder and export the header. Later I will import it in a new page. Would that help?

I saw that HEADER BUILDER has an "Export" and "Import" option. Will this transfer the entire header including colors and settings?

Please restore my site to the time you started checking. This is a working (not developer) version. I'm trying to import the header from the development version.

Please see what happened:

https://www.kierunekwlochy.pl/

I was able to run the development version on the target domain, but all changes to the theme were lost. What could have happened? I had everything perfected.

Already fixed. Export settings from the development version to the final version.