Hello,
it opens up on a new window
– it was done to speed up the work of the header builder.
When you edit the custom header, the Blog page opens, it was done to speed up the proses, just click on Logo and the Home page will be opened.
Provide FTP access, so our developers can take a closer look at the problem with the custom header. Could you temporarily disable CDN cache?
If you do not know how to create FTP contact with your hosting provider, they will help you.
Regards
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