I have a PAP2T for the Extension I am setting up. I actually have 4 PAP2T's that I am configuring on the new Version 10 system. I had these running, no changes done, on the V8 3CX phone system. After I put this new system in, in the 'Server Activity Log', I see that it connected to the IP address of the 3CX server, but gets the error 'Credentials don't match'. I did a factory reset and redid the config as per the 3CX Wiki for the PAP2T devices as an extension, but still get the same issue. My login credentials are simple, the extension, which is a 2-digit one, of '10' for the Extension, Display Name, UserID, Auth ID and Password, to keep it simple. I have seen on other posts that the extension is as the Auth or User ID is key, so I had it that way from when it was working on the old 3CX system. I have verified several times the userid and password are the same in the 3CX and PAP2T device. I can run Netmon or Wireshark if this helps, but wondering if it is something simple I am missing. I still have the old system to compare the config to. Let me know if anyone has any ideas here? Thanks.