While the website can be accessed via Wi-Fi, it shows a 503 error when trying to access it using mobile data.

[cRen]

Hello friends. Due to a technical issue on the site yesterday, we migrated to a cloud server and transitioned from cPanel to DirectAdmin. Currently, there are no speed-related issues with the site. While the site was generating a general 503 error, there were errors in the wpconfig related to the define Cron and Trash commands. I removed them from the configuration file, and now the site is opening smoothly and has also significantly sped up. However, when trying to access it via mobile data, we are getting a 503 error. What could be causing this? The site is a WordPress site with high file sizes and traffic. Due to the mobile data access issue, we are currently experiencing a 60% hourly loss in users.