Hey Billy,
Yes, seems to be ok.
So if i want to edit the slider i have to do it with elementor?.
If a website update will come, can i update it or the site will come back with old errors?.
#1. That’s right, you can use elementor to edit this slider, it will be lighter than the Revolution Slider plugin.
#2. All customizations are written in the child-theme so when you update the main theme will not be affected. Please do not update the child-theme, your customizations will be lost. Should backup the child-theme into 1 copy and save it