missing headlines in Categories after template change

Hi,
I have changed the category template in Category global settings and now all the category headlines are missing.
I am trying to use template 4 to make my categories look like in the demo version “travel theme” (https://demo.tagdiv.com/newspaper_travel/category/destinations/europe/), but I am not getting the headline (“Europe” in the case of the example)

Thanks for your help!

Hi,
thanks for the answer.
We are not using a demo, but yes, we are using some custom css:

.td-main-content-wrap .td-a-rec{
display: block; !important
}

.td-page-title{
display:none;
}

.wpb_wrapper ul li {
font-size: 18px;
}

.td-category-description {
font-size: 18px;
line-height: 28px;
}

@media (max-width: 767px){
.td-header-top-menu-full,
.td-header-sp-top-menu {
display: block!important;
text-align: center;
}}

Unfortunately, I do not know much about it, it has been added to modify an ad from rental cars that did not display properly and to modify the bullet point list fonts. This was added by somebody who no longer works for us.

I do not know about any modification to the theme files.

Thank you very much,

many greetings