Hello, @belen,
Thank you for contacting us and for using XStore.
1/ https://www.8theme.com/documentation/xstore/xstore-builders/new-xstore-header-builder-with-elementor/
Please go to XStore Builders > Header builder > edit template > Mobile menu.
B/ Dasboard > Products > Categories.
Please Navigate to your WordPress dashboard.
Go to “Appearance” > Menus and select “Mobile Menu & categories menu”
Edit as per your requirement and save settings.
2/ Please read and follow the instructions written in our theme documentation here:
https://www.8theme.com/documentation/docs/xstore-mobile-panel/
We hope this helps. Should you require further assistance, please do not hesitate to contact us.
Best Regards,
The 8Theme Team