Hello!
Thanks for getting in touch with us. My name is Muhammad and I will be your support rep.
You will have to remove the logo and logo element from the header builder. Then you will have to use the HTML blocks to add your text, please see this short video, I have made for you:
https://share.getcloudapp.com/8LukkW8e
Please let me know if you need any further help or need me to make changes.
Thank you