Hello,
Thank you very much for choosing our theme and for contacting us.
Do you want to install the demo on the existing site? If so, please read and follow the instructions written in the Theme Documentation here: Import Demo Content: https://xtemos.com/docs/woodmart/installation-process/
OR Watch this video: https://youtu.be/q4tU5TAZtIk
If you want to ask anything else then provide a relevant screenshot with some elaboration to check it myself and help you out accordingly and also please share your site WP Admin Login details as well in a private content area of this topic.
Regard’s.
Xtemos Studio.