PHP curl code stops working after a few requests Cent OS 7 server

I created a droplet in Digital Ocean and I have a code in PHP that uses curl to scrape a specific page.

When I created the server and configured it, the code works fine, but after a few requests it stops working. The curl doesn’t respond with the correct page, looks like there was a redirect to a wrong page.

I tried to destroy the droplet and start all over again, this time I created a snapshot of the droplet with code working, again after a few requests it stops working, I tried to restore to the snapshot, but it doesn’t work. Does anyone know what is happening? I think is some wrong or missing configuration, but I don’t figure out what is wrong.

I am using CentOS 7, apache, php 7.2

P.S.: The code works fine in other server that I use in a shared server in Hostgator, and works fine in localhost, too.