Anchor is breaking all the design on the branding email template

Hi, we are having a problem on the branding email templates.
Every time we want to add an anchor html tag to the email template it breaks the whole template design from the anchor tag to the end.
This is a problem for us because we must include links both in the body of the email and in the footer that we have included in the template.
In addition to that there is no way to do the walkaround of adding a span tag and add some javascript to emulate an anchor because that is not working either.
Can you help us with that?

Thanks in advance