Hello @ifkda,
Thanks for writing to us.
In order to assign the custom Header to multiple pages, I would suggest you use the “OR” operator instead of the “AND” operator. Please have a look at the given screenshot below.
In case you have not seen our doc of the assignment please have a look at it to learn more about how to assign the header or other layouts.
If it doesn’t work for you, please share your details in a secure note. Please provide the following details
- WordPress Login URL
- Admin level username and password
- Exact page URLs and Header layout URL
You can find the Secure Note button at the bottom of your posts
Thanks