Email, Landing Page, Twitter not work

Hello Dear Member
I hope you are doing well.
I have integrated the Twitter plugin with the Api for a week testing Hashtags and IDs but I feel like nothing is happening.
I have also configured cron jobs for social tracking someone please explain.

The other problem is the emails that refuse to be previewed or preconfigured.

I use Cpanel L with Php 7.4.25 and MySql 10.3.31-MariaDB-cll-lve
Mautic 4.1