Thanks Anne,
Another two questions that found out:
1. I make 50% price discount. On the default template it wrote "Save: 50% off" but now it does not write it but only the prices.
I think it is important. Link
2a. When showing items inside a category, there is a button of "Filter results by: Items starting with..."
but on mobiles this text is Cut. [same link]
2b. When showing items inside a category with several pages, there is a button "View All" which is cut to two lines on mobiles. [same link]