Inserting links

EDIT
Sorted WYSWYG enabled.


On this forum if I click on the icon to insert a link a box opens with a space to put the link in.
https://vine.createaforum.com/index.php
However on my site if I click the same icon I get (url)(/url) square brackets changed to () so it does not show as link.
This gives a lot of problems for people who do not know what it means and lots of text looks like links in their posts.
There may be a setting I have not found but I am quite new to this and had to set up a forum in a panic when our old one vanished.