I'm having an issue when trying to login and it fails after 10 attempts to connect to the server?

I'm using Elastix 1.5.2-2.3.

I've got it going on a test VMWare instance but not in my production environment.

Here's my configs,

1. /usr/local/fop2/fop2.cfg

; AMI definitions
manager_host=127.0.0.1
manager_port=5038
manager_user=admin
manager_secret=xxxxxxxx
;event_mask=call,agent

; Daemon definitios
;listen_port = 4445
;restrict_host = www.asternic.org
;web_dir = /var/www/html/operator/fop2

; Global Config
language = en
poll_interval = 86400
poll_voicemail = 1
monitor_ipaddress = 0

master_key = 12345678

; USER LIST
;user=620all
;user=621all
;user=622all
;user=623all
user=5800all
buttonfile=buttons.cfg

;#exec autoconfig-users-freepbx.sh

2. /usr/local/fop2/buttons.cfg

[SIP/5800]
type=extension
extension=5800
label=Test User
mailbox=5800@device
context=from-internal
extenvoicemail=*5800@device

Cheers