Opencart 3.0.3.8 problem new orders not visible in backoffice and not receiving mail about new order

Job ID: 39641565

Budget: $30 – $250 USD

We have a multi-store Opencart installation running on opencart 3.0.3.8
I think problem is caused by easyhosting: They are upgrading its shared hosting servers to AlmaLinux 9
Monday I shipped last orders and since then I don't receive any emails about new orders, they are not visible in the backend of opencart but they are visible in the database.
Can you solve this problem asap?
Related categories: PHP MySQL Open Cart