arino template

This did not correct anything
http://demo.joomshaper.com/?template=arino
here is how a product should look according to the demo
http://mundotecnologicoexpress.com/index.php/tienda/productos-para-el-hogar/juego-de-ollas-ceramica-tv-9-pzs-antiadherente-ceramica
here is how it is looking where you can see that various things changed such as the font and its size in the product title.
I change the way the images are seen since they should only be 4

In this image I show the example:
https://www.dropbox.com/s/9nx8c6r4xswutac/Captura%20de%20Pantalla%202021-02-05%20a%20la%28s%29%209.42.46%20a.%C2%A0m..png?dl= 0

Now at this URL
http://mundotecnologicoexpress.com/index.php/tienda
The filter system does not work. Are several things

We are an advertising agency and we have several clients, but in order to buy the $ 299 agency license, I want to confirm beforehand what the support is like and the guarantee that everything works fine.
Thank you very much!

Analyzing the demo that has this line of code
http://demo2.joomshaper.com/2019/arino/index.php/shop/jbl-tune-500bt-on-ear
h2 {
font-family: 'Roboto Condensed', sans-serif;
font-size: 30px;
}

http://mundotecnologicoexpress.com/index.php/tienda/electronicos/bascula-electronica-digital-40-kilos-recargable
Seeing how it appears in which we are working
h2 {
font-family: 'Roboto Condensed', sans-serif;
font-size: 80px;
}