AnaCa
You can include the below code in the Javascript section of Text/Graphic question. It will go to the next page. Post that if you want to auto advance to different question types you can enable it from Look and feel section.
Qualtrics.SurveyEngine.addOnReady(function()
{
/*Place your JavaScript here to run when the page is fully displayed*/
var qid=this.questionId;
document.onkeydown = function(event) {
console.log('keydown',event);
if (event.which == 32) {
jQuery('#NextButton').click();
}
}
});
Hope it helps!

Thank you so much, Deepak! The code you sent works perfectly!
Of course you have to publish the survey (I only say this in case there is someone else with the same doubt and do what I did). I first was trying to see if it worked only with the Preview and it didn't work well (obviously ), but once you publish the survey it works perfectly.