I have had issues now for days. I realized the reason the mobile header was not working was as a result of the elementor header and footer plugin. After deactivating, it works fine.
But the main reason I settled for elementor header and footer plugin was that editing the native footer is not effective.
I have deactivated all plugins and even switched themes for twentytwentyone then reactivated woodmart but its the same issue.
When I click on update, it keeps turning and turning and does not save. I have tried chrome, Mozilla and edge. Same thing.