Hi
You can select your desire header template by going to Dashboard > Xstore > Theme Options > Header > Header Builder > Header Template https://prnt.sc/zhzsst
Have you watched our video tutorial how to create header using header builder? https://www.youtube.com/playlist?list=PLMqMSqDgPNmDu3kYqh-SAsfUqutW3ohlG
Let us know if you still facing the issue.