Hello

Thank you for your query. Could you kindly specify which button you are asking about? If you could share a screenshot highlighting it, that would be very much appreciated. You can use this tool https://imgur.com to share the screenshot.

https://imgur.com/a/zIUqUQv

Please go to Modules and open "Menu Button" module for changing the top-right button (Langgan).

For the other button - you can open the home page with SP Page Builder front end editor and click on the button to edit.

Hope this helps you.