Maybe ask the person who you know can do this? If he won’t tell, you can try reverse engineering it.
You ask for instructions on how to use a service we don’t provide on a website that’s not hosted with us (you don’t seem to have any active accounts with us right now). I’ve never even heard of this Linkvertise site and I can’t exactly say I’d be happy to recommend them.
The problem smells similar to ad blocker detection and blocking, which is an extremely messy and hacky business. It’s in the interest of ad blockers to not be blocked, so they don’t nicely announce their presence for you to show your message. It’s a continuous cat and mouse game of detection and evasion.