Hello, @Atip,
Thank you for purchasing our theme and for contacting our support center.
If you would like to change the type of the search, please navigate to XStore > Theme Options > Header builder > Search > Type > Select full-width search and publish it.
For further reference, please refer to the image provided at the following link: https://imgur.com/y2ADO5D
We hope this will solve your issue.
If you have any additional questions or concerns, please do not hesitate to contact us. Our support team is always available to assist you.
Best Regards,
8Theme’s Team