How do I add a link when I am sending a message to all registrants through the component? I tried once and it was converted to something that was not the link I added. it was something like /components/dtregister... I just want a link people can click and take them to a page.
If it's a link to your Joomla site, you'll need to modify your WYSIWYG editor to NOT create "relative URLs". When this is enabled (which is default in most editors), the domain portion of your url is dropped... so in an email you have an incomplete link. For a page on your website, it'd be fine. In someone's email box, not so much.