Hey @raritysource, welcome to the community!
Do you use a square online site?
Is your site customer code?
Who is your site built with, this will help us to work out which direction to point you in!
HI, if you have your account with Square setup, you have access to the Square Online Dashboard to create your site.
If you have your website with a different provider (ex.Shopify, BigCommerce etc) then you would need to integrate Square as the payment provider. Each platform has their own way of connecting with Square. You can search their app marketplace and support pages for information.
Your Online button may be a different color.
