[arm-allstar] IAX registration for Zoiper & md5

[Marty]

I've been trying to give my cell with Zoiper made entries in iax.config 
with registration entries. I get this failure message from CLI  
chan_iax2.c:7032 register_verify: Host 172.56.26.145 failed MD5 
authentication of 'marty' rejected

I looked further into the md5 and how to generate a new md5 but I think 
the document show for astrick and not for Allstar.
I found this command  echo -n “<user>:<realm>:<secret>” | md5sum
It shows <realm> as “asterisk” as on 
(https://www.voip-info.org/asterisk-sip-md5secret)
I entered my user and secret as generated a new md5 but I get this error 
when trying to register with the Zoiper account on my phone.

[Mar 31 18:11:13] NOTICE[19197]: chan_iax2.c:7032 register_verify: Host 
172.56.26.145 failed MD5 authentication for 'marty' 
(1642b3800145c8564a39c5c509f66bb5 != 2aa6bdafd706b019d18f150ccf8c89d25) 
so it is registering but fails md5.

Anyone have any idea on how to disable md5? TNX!

Marty KD4HLV