It's a new installation. I've tried many new installation but same result.
Nothing php error. Sellinux disabled. I have failban but nothing error.
The logs site access are these:
151.76.191.244 - - [16/May/2019:08:06:54 +0200] "POST /support/upload/scp/ajax.php/lock/ticket/1 HTTP/1.1" 200 39 "http://www.csp.ovh/support/upload/scp/tickets.php?id=1" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.131 Safari/537.36"
151.76.191.244 - - [16/May/2019:08:06:55 +0200] "POST /support/upload/scp/tickets.php?id=1 HTTP/1.1" 302 13 "http://www.csp.ovh/support/upload/scp/tickets.php?id=1" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.131 Safari/537.36"
151.76.191.244 - - [16/May/2019:08:06:56 +0200] "GET /support/upload/scp/tickets.php?id=1 HTTP/1.1" 302 13 "http://www.csp.ovh/support/upload/scp/tickets.php?id=1" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.131 Safari/537.36"
151.76.191.244 - - [16/May/2019:08:06:56 +0200] "GET /support/upload/scp/login.php HTTP/1.1" 422 5939 "http://www.csp.ovh/support/upload/scp/tickets.php?id=1" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.131 Safari/537.36"
The post reply is accepted in the ticket only after the new authentication.
This is the log access after autenthication
151.76.191.244 - - [16/May/2019:08:10:29 +0200] "POST /support/upload/scp/login.php HTTP/1.1" 200 68 "http://www.csp.ovh/support/upload/scp/login.php" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.131 Safari/537.36"
151.76.191.244 - - [16/May/2019:08:10:29 +0200] "GET /support/upload/scp/tickets.php?id=1 HTTP/1.1" 200 70097 "http://www.csp.ovh/support/upload/scp/login.php" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.131 Safari/537.36"
151.76.191.244 - - [16/May/2019:08:10:30 +0200] "GET /support/upload/scp/autocron.php HTTP/1.1" 200 42 "http://www.csp.ovh/support/upload/scp/tickets.php?id=1" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.131 Safari/537.36"
Thanks