Shortcodes & h1 menu

Hello,

I first developed my website with MAMP on my computer and then put it online.
Some functionalities don’t work :

> shortcodes
when I want to add an accordion or tabbs, or anything else, the only shortcode that appears is [social_icon link='google.com' target='blank' icon='facebook']

> h1, h2, h3, paragraph…
Are not available when I work on a page. I must write it in HTML.

What can I do to fix theses bugs ?
Hope my english is not too bad
Thank you for your help !

Dorothée