Hi there,
The website you’ve linked (https://pruebas.arenatours.com/) isn’t loading for me. Can you double check?
First I need to get the modal working: for any reason it doesn’t work (no errors displayed, no modal opened).
This doesn’t sound like a theme related issue so you will need to do a little debugging to try to find the problem.
And second, I need the div where the button is placed, to be in the sticky navigation
Can you fix the URL issue above so I can see the current layout?