I can't edit Dilan joomla4 theme slide text

I downloaded the complete Joomla 4 file of the Dylan theme. I installed the file correctly on the server and noticed that the slide does not have the slide text editing field, editing the text directly on the page and saving the changes does not remain. The slide button also does not have an editing field in the sppage and it is not possible to edit directly from the front of the site. I updated the php, made sppage updates and nothing resolved. How to solve this problem?

www.landua.com.br/portal