How to change the title: from H2 to H1

On my website now I’m having a little problem and I don’t how to solve it. The page and post title are shown like h2, instead of h1.
So the question is: how can I change all the title assignment to H1?
Thank you

Hi @paolobitta84,

I hope you are well today and thank you for your question.

You can try achieving this by using the attached custom child theme of Travelify theme that contains some custom code.

Best Regards,