Site crashed and in recovery mode I discovered that 'toolset types' causes a fatal error. This plugin was deactivated and the site worked again.
Now when trying to activate the plugin, this the message is displayed :
Warning: require_once(/home/dh_5gikkq/habitasium.com/wp-content/plugins/types.old/application/bootstrap.php): failed to open stream: No such file or directory in /home/dh_5gikkq/habitasium.com/wp-content/plugins/types.old/wpcf.php on line 75
Could you make sure that each of the other Toolset plugins is up-to-date (I see that Forms and Blocks each have newer versions available), and then manually replace Types with the current version available from toolset.com/account/downloads (delete the current version, download the zip archive, and then upload it on the add new plugins page).
When everything is up-to-date, do you still see a problem?