One of the big issues with TM templates is that they often conflict badly with zencart add-ons.

I see you are using a "SEO" mod (though there is no need to anymore as SE's read ZC better on dynamic url's)...

... but it could be that the template is refusing to behave because one (or more) add-ons you have installed just do not talk to it very well.

It's early days for you on this forum... And you could be spending much of your life here desperately seeking solutions for this wretched TM stuff, that you just won't have time to run your business...