First of all thanks for choosing our Theme, we are glad to be you in the WoodMart WordPress family :).
I saw the screenshots you attached.
1) The page is edited using the front-end editor of the Wp-Bakery page builder. You can edit the page using the Wp-Bakery front end editor and modify it according to your needs.
If you are trying to ask anything else then please provide some relevant screenshots of the specific area with the URL of the page where you added the button to check it myself and help you out accordingly.
2) You can edit the footer content from Appearance >> Widgets >> Footer Columns.