Edit "button.html"

Find this code

<a id="verify-button" href="YOUR_LINK_LOCKER_HERE" rel="nofollow noreferrer" target="_blank">

Replace YOUR_LINK_LOCKER_HERE with your locker link

example:

<a id="verify" href="https://locked1.com/cl.php?id=1234abcd" rel="nofollow noreferrer" target="_blank">