WP All Import on "[Plugin: Import any XML or CSV File to WordPress] How to fix the [Accept-Language] error while importing xml/json from url?"

WP All Import helps you import data, automating the same process that would be used when manually creating the data.

How would you manually set this HTTP header for each page? If you can answer that question we can tell you how (or if) you can import this data with WP All Import.