I understand that the problem is not that the AMI

The file seems ok /etc/asterisk/manager.conf

;
; AMI - Asterisk Manager Interface
;
; FreePBX this needs to be enabled. Notes That if you enable it on a different IP, you need
; to assure That this can not be Reached from an authorized-hosts with the ACL settings (permit / deny).
; Also, remember to configure non-default port or IP-addresses in amportal.conf.
;
; The AMI connection is Used Both by the portal and the operator's panel in FreePBX.
;
; FreePBX Assumes an AMI connection to localhost: 5038 by default.
;
[General]
enabled = yes
port = 5038
bindaddr = 0.0.0.0
displayconnects = no; only effects 1.6+

[Admin]
secret = manapaisa2009
deny = 0.0.0.0 / 0.0.0.0
permit = 127.0.0.1 / 255.255.255.0
read = system,call,log,verbose,command,agent,user,config,command,dtmf,reporting,cdr,dialplan,originate,message
write = system,call,log,verbose,command,agent,user,config,command,dtmf,reporting,cdr,dialplan,originate,message
WriteTimeout = 5000

include manager_additional.conf

include manager_custom.conf

Yet it does not respond to telnet

Does anyone have advice?