Problem editing sidebar

I’m creating a new website. This has no problem, i’m using the default pro demo, but I can’t do any changes in the sidebar i dont find where to make changes, i activated the “Smart sidebar” for create a new one and put it in my posts but i doesnt even works, i need also to change the titles of the categories because the language of my website is spanish and i dont find where to edit it, this is the website http://umcentral.umanizales.edu.co/, this is a post that has side bar for example http://umcentral.umanizales.edu.co/index.php/2020/03/26/las-mascotas-no-representan-un-factor-de-riesgo-en-el-contagio-del-covid-19/. As you can see this page has a sidebar, but I can’t change anything and I don’t see the sidebar in the tagdiv-composer. What is the problem?, i just also tried deactivating all plugins except tagDiv ones and that didnt work… can you help me please?

Greetings Eliana