I would simply like to display a custom welcome message on a page of mine... "Welcome back USERNAME-GOES-HERE!"
However, I need to make this happen within a shortcode as follows:
[call_to_action title="Welcome Back, USERNAME-GOES-HERE!" tag_line="Good to see you!" button="Get Stuck In" link="http://bla.com"]
I found this but I can't really work out how to implement it: