X-lite registration issue

I have 2 server home and Im behind a router

one is a desktop and works fine Ip:

the other is VM and has Ubuntu+FreePBX+a2billing IP:
I install everything and Im able to access both GUI
I am using X-lite to place calls

However I configure trunks and also configure extensions for the server.
ext:1001 and secret:******
both information on X-lite and on the server match (I check 20times)
For some reason X-lite is not able to connect to the server
proxy: (check everything is fine)

I also configure the NAT in freePBX

Do you guys know anything that could cause this issue?