SOLVED incrediblepbx13-12.2 ubuntu asterisk down

[Rrrr]

Thanks. So I am under pressure and re-installed my DigitalOcean droplet (Ubuntu 14.04 x32 vmlinuz-3.13.0-79-generic) and an older version of Incredible PBX. But have same problem here: I cannot even register an IP phone.

What can be wrong: Here's what I did:
1) installed incredible PBX http://incrediblepbx.com/incrediblepbx11-12.1-ubuntu14.tar.gz (rebooted 2x)
2) I set iptables correctly and locked it down (incl. reboot)
3) I set SIP settings as usual: detect IP, set local networks,
4) CHAN SIP: NAT=No, Public IP.
5) I entered a new extension with NAT=YES
I am starting to doubt myself...any hints, did I forget something?

Incredible PBX 11-12.1 for Ubuntu 14

Asterisk: UP Apache: UP MySQL: UP
SendMail: UP IPtables: UP SSH: UP
LAN port: UP Fail2Ban: UP Webmin: UP

RAM:25744 Ubuntu 14.04.4 LTS Disk: 239M

Asterisk 11.22.0 Incredible GUI 12.0.30

 

[Rrrr]

...Finally I managed to register. Rebooting the IP phone seemed to have helped.