The only rarely thing that i see is that all agent in its users configuration has the Inbound Groups active and the user that i want to use is not include, but when i access to the camping with the bad user and check the inbound group selection it is disable despite activate the inbound group before to login.
This is an image of the bad user
Asterisk 1.8.23.0-vici 1|| CentOS release 6.10 (Final) || mysql Ver 14.14 Distrib 5.1.73, for redhat-linux-gnu (x86_64) using readline 5.1 || Versión: 2.14-751a CONSTRUCCION: 200425-0949